Best Isekai Harem Anime – Mangas Theory
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Best Isekai Harem Anime – Mangas Theory

Best Isekai Harem Anime offers us the best distraction from reality and transfers us into a fantasy world in search of a more exciting life. This is why Japan produces countless isekai anime with overpowered main characters who suddenly find themselves in a completely different world.

There was always a dominant isekai trend that lasted for years, but the bubble eventually burst due to oversaturation. A constant cycle of regurgitated shows with little innovation and passion in their works. So isekai harem could have been the next popular trend to take its place.

The genre is subject to much justified criticism for having too many of them. But when Isekai combines with Harem, it has the potential to spice up the genre with the “Protagonist dies, is reincarnated, and is overpowered in a harem world full of adoring girls”. When done well, isekai harem series with an overpowered protagonist can be fun as long as they have likeable characters. So, if you’re looking for fun shows, I’ve compiled a review list of the best isekai harem anime you should try.

Let’s reset the power levels and get going!

30 Masamune Kun No Revenge

As a child, Masamune Makabe suffers because of Aki Adagaki, a beautiful girl from a wealthy family, who calls him “Piglet” because of his plump appearance. Seeking revenge against his tormentor, Masamune works hard to improve himself and becomes a handsome, albeit narcissistic, teenager when he enters high school.

Meeting Aki again, Masamune plots his revenge with the help of her maid, Yoshino Koiwai. He gets closer to her step by step with the intention of breaking her heart when the time comes. However, as their friendship begins to develop, Masamune questions his devious plan. Does he really want to hurt the woman who used to make fun of his looks?

Main Character

Masamune Makabe 

Masamune Makabe is the main and titular protagonist of the manga series, Masamune-kun no Revenge.
He comes back as a fit and handsome young man to get revenge on Aki Adagaki, the girl who had brutally hurt his heart. With the help of Yoshino Koiwai, Aki’s maid, he’s looking for succession in breaking the Brutal Princess’ heart.

29 Death March To The Parallel World Rhapsody

Death March To The Parallel World Rhapsody

This Best Isekai Harem Anime synopsis, Ichiro Suzuki is a 29-year old game programmer who was tasked with fixing several bugs in two MMORPGs his company is preparing for publication. However, he becomes extremely worn out as he is working during the weekend. After taking a nap, he mysteriously wakes up in a parallel world that resembles some of the fantasy RPG worlds he had worked on, as a 15-year old named Satou, later Satou Pendragon, a nickname he uses while running beta tests, and with what looks like the menu screen of the game he was working on appearing before his inner eye.

However, before he can grasp his current situation, an army of lizardmen ambushes him and launches an all-out attack on him. In desperation, he uses all three of his special ‘Meteor Rain’ attack options (a quick fix he added to the game for new players which kills all enemies in the vicinity) at once and wipes them all out – accidentally killing a god as well. As a result, his level jumps from 1 to 310, maximizing his stats immensely and making him one of the most powerful people in the world. With no way to return to his world, and as a high-leveled adventurer armed with a myriad of different physical, cognitive and magical abilities and weapons, he sets out to uncover the secrets of this new world, earning the trust and affection of many people in the process while keeping his overpowered stats concealed.

Main Character

Suzuki Ichirou

Suzuki Ichirou is a Programmer who was stuck working on 2 projects during the holiday due to his Junior Programmer disappearing right before the game’s release, forcing Ichirou to fix all the bugs and meet specifications.

His director/planner can barely remember his name even though they have been on the same team for half a year at most. He almost called him Satou (pronounced Sa-2), he has also been called Satou since his school days. Satou woke up in a game-like world after falling asleep on his desk for around 30 hours of debugging and checking, causing him to think it was a dream at first.

Satou Pendragon

He arrived in a parallel world as a 15-year-old teenager named Satou. His initial attributes were all 10 at level 1. He fainted/collapsed after activating [Meteor Shower] due to the sudden level up from 1 to 310. He is able to change his info, such as name, title, level, skills, etc., at will, but is limited to only those he has obtained, which includes None.

28 That Time I Got Reincarnated As A Slime

That Time I Got Reincarnated As A Slime

Best Isekai Harem Anime Plot, Satoru Mikami is an ordinary 37-year-old corporate worker living in Tokyo. He is almost content with his monotonous life, despite the fact that he doesn’t have a girlfriend. During a casual encounter with his colleague, an assailant pops out of nowhere and stabs him. While succumbing to his injuries, a mysterious voice echoes in his mind and recites a series of commands which he could not make sense of.

After regaining consciousness, Satoru discovers that he has been reincarnated as a Slime in an unfamiliar world. At the same time, he also acquires new-found skills, particularly the ability called “Predator,” which allows him to devour anything and mimic its appearance and skills. He stumbles upon Veldora, a powerful ‘Storm Dragon’, who has been sealed for the last 300 years for reducing a town to ashes. Feeling sorry for him, Satoru befriends the dragon, promising to help him in destroying the seal. They decide to exchange names, Veldora bestows upon him name Rimuru, and receives name Tempest in return. Slime then consumes the dragon together with his prison in order to analyze the spell inside itself and eventually free Veldora.

The disappearance of Veldora’s aura creates a power vacuum which eventually makes Rimuru the leader of all beings inhabiting the Great Forest of Jura, who accept him as a ruler and together they found the nation of Tempest. With Rimuru’s strength, wisdom and idealistic vision the new nation quickly grows in strength and influence. Soon Rimuru and his subjects draw the attention of the nearby foreign powers, from monarchs and legendary heroes to demon lords, some seeking to become their allies, while others intending to take advantage of or destroy them completely.

Main Character

Satoru Mikami

Satoru Mikami was a middle aged Japanese salaryman working as a general contractor. After death, he reincarnated as a Slime in a different world who was later named Rimuru by the Storm Dragon Veldora.

Check Out : Best Anime & Manga Like Isekai Meikyuu de Harem wo

27 Dog Days

Dog Days Isekai Harem Anime

On the continent of Fronyald, the Republic of Biscotti is under violent attack from a neighbouring country (the battles do not cause any casualties and are considered sporting competitions), the Kingdom of Galettes. In order to defend her lands, Princess Millhiore F.

Biscotti decides to summon a hero capable of saving the country. However, it will be Shinku Izumi, a simple schoolboy from Earth, who will be summoned, leaving everything to believe that he is the long awaited hero. He will be entrusted with the sacred weapon called “Palladion” to fight his enemies. Despite his lack of experience, Shinku will have to progress and do everything he can to repel the invader and save his new friends.

Main Character

Shinku Izumi

He’s the main character, he has been summoned by the princess of Biscotti to be the hero of her kingdom. He has a ring that can summon any weapon that can take different forms depending on its owner (in Shinku’s hands, it becomes a staff). He has a cheerful and simple personality, always going at his own pace. Athletic and acrobatic, he loves sports.

26 My Next Life As A Villainess: All Routes Lead To Doom

Best Isekai Harem Anime

This Best Isekai Harem Anime Talk about Catarina Claes, the young daughter of a noble family, one day bumps her head and regains memories of her past life as a 17-year old otaku girl. It is then that she realizes she has been reborn into the world of the otome game Fortune Lover as the game’s villainess who, regardless of what route the player took in the original game, is doomed to be either exiled or killed. In order to avoid these routes that lead to doom, Catarina begins taking countermeasures. This, however, ends up having unexpected consequences on her relations with the other characters of the game’s world.

Main Character

Catarina Claes

Katarina Claes is the quintessential villainess of the visual novel game Fortune Lover and the main protagonist of the series. After hitting her head as a child, she suddenly remembers her previous life as a high school student and she tries desperately not to wind up with bad endings like her game counterpart.

25 Conception

Conception Best Isekai Harem Anime

One day, Yuge Itsuki and his cousin Konatsuki Mahiru are transported to the fantasy world of Granvania. Mahiru has been elected as one of the 12 priestesses of the zodiac, and Itsuki has been charged with saving this world from the “impurities”. To save Granvania he will have to perform the sacred ritual of love with each priestess to use their powers. Only when the task is completed can these two return home!

Main Character

Itsuki Yuge

Itsuki Yuge is the male protagonist and proclaimed God’s Gift in Conception: Please Give Birth to My Child!! and Conception Plus: Maidens of the Twelve Stars. His default name can be changed to the player’s choice.

24 Gate

Gate Best Isekai Harem Anime

Second Lieutenant Itami, taking advantage of a leave to go to a fanzine convention, finds himself in a train station in the Ginza district of Tokyo, when at the same time a giant door appears from nowhere. An army of soldiers reminiscent of Roman legionaries, dragons and other fantastic creatures emerge from the door and wantonly attack everyone they meet.

While Itami helps some civilians to flee, the self-defence forces arrive and quickly neutralise these otherworldly enemies, as the military’s modern arsenal is far more effective than the ancient arsenal of these ancient enemies. Later, the Japanese government decides to send its military to the other side of the gate to prevent another attack as well as to assess the potential of this special area.

Main Character

Yoji Itami

Yōji Itami (伊丹 耀司 Itami Yōji) is the main protagonist of Gate – Thus the JSDF Fought There! and Gate: Weight Anchor.

23 The Greatest Demon Lord Is Reborn as a Typical Nobody

This best isekai harem anime is a Japanese light novel series written by Myōjin Katō and illustrated by Sao Mizuno. It began serialization online in August 2017 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by Fujimi Shobo, who have published the series since May 2018 under their Fujimi Fantasia Bunko imprint.

The light novel is licensed in North America by Yen Press. A manga adaptation with art by Misuho Kotoba was serialized in Square Enix’s seinen manga magazine Monthly Big Gangan from February 2019 to July 2022. The manga is licensed digitally in North America by Comikey. An anime television series adaptation by Silver Link and Blade aired from April to June 2022.

Main Character

Ard Meteor

Ard Meteor is the main male protagonist of The Greatest Demon Lord Is Reborn as a Typical Nobody. He is the Demon Lord Varvatos who defeated the Evil Gods and united the world. He chooses to reincarnate three thousand years into the future due to the loneliness brought about by his overwhelming power.

22 How Not To Summon A Demon Lord

How Not To Summon A Demon Lord

Takuma Sakamoto is a hikikomori gamer who is mysteriously transported to the virtual world of his favourite MMORPG, Cross Reverie, with the appearance of his own character in the game, the Demon Lord Diablo. The two young girls who summoned him, the pantherian Rem and the elf Shera, attempt to use a spell to make Takuma their servant, but due to his magic ring with the ability “Magic Reflection”, the spell rebounds, and both end up with magic collars stuck on their necks, thus becoming his servants instead.

With a serious case of social anxiety, Takuma decides to act like his character while interacting with others, and makes use of his high stats and vast knowledge of Cross Reverie’s lore to survive in his new environment, traveling along with Rem and Shera to look for a way to remove their slave collars, while helping them with their own personal issues that led them to summon him in the first place.

Main Character

Takuma Sakamoto (Sakamoto Takuma) a.k.a. Diablo (gamer tag:@Diablo-13) is the male protagonist of the series. He was a Cross Reverie player who controlled the character Diablo, known as the true Demon King. He always defeated players with better equipment and overwhelming skills, always holding back for being too strong.

But one day he was invoked in another world, reincarnating in the body of his character, Diablo, finding two girls, a Pantherian and an elf, who claimed to have invoked him and that he should be a slave to one of them but due to his ring the magic back against them becoming slaves.

21 The Fruit of Evolution

Seiichi Hiiragi is an overweight high school student who is bullied by his classmates for being a “loser.” One day, his entire school is suddenly transported to a video game-like world of swords and sorcery. When he accidentally eats “the Fruit of Evolution,” not only does his physical appearance change, but also his life as a successful “winner” begins.

Main Character

Seiichi Hiiragi

Tsukkomis very much. But the protagonist. Evolved by the fruit of evolution. A person who has returned to human life once from a human being. His parents passed away a little later after he entered high school. He managed to make his living through the heritage of insurance money that his aunt managed. He was on good terms with his parents; he had difficulty accepting the death of his parents; he had no more energy to go out; He had been eating his meals without energy by way of delivery, he became fat.

When he feels stress, he’s the type that eats a lot. It is an advantage to think positively about anything, but there are many times when he can’t think positively. He was blessed with friends, but he consciously avoided them from his own judgment and small pride. There is a bad habit that would be self-contained alone. Because of his appearance and body odor, he was subjected to collective abuse. In the school, he is the only being who has not been summoned as a hero. He has to affirm his past self to Saria, he was finally able to admit himself.

20 Konosuba


This Best Isekai Harem Anime Talk About Following an untimely and embarrassing death, Kazuma Sato, a Japanese teenage shut-in NEET, meets a goddess named Aqua, who offers to reincarnate him in a parallel world with MMORPG elements, where he can go on adventures and battle monsters. Despite being offered a superpowered item or ability to use in this new world, Kazuma, following some provocation, chooses Aqua herself to accompany him to the town of Axel, quickly finding her absent-mindedness to be less than beneficial.

With Aqua unable to return to the afterlife until the Devil King is defeated, the two form a party and recruit two other members; an explosion-obsessed magician named Megumin and a masochistic crusader named Darkness. Due to the party’s dysfunctional abilities, Kazuma quickly gives up on the idea of defeating the Devil King and tries to live a comfortable lifestyle, only to find the circumstances of his daily life are forcing him and his party to encounter and battle the Devil King’s generals.

Main Character

Kazuma Sato

Prior to his new life in the Fantasy World, Kazuma was a hikikomori, thus isolating himself from society and spending all his time in his room playing video games, all while maintaining little to no relationships outside. Some of these traits would manifest from time to time in the Fantasy World, such as becoming extremely nervous when first meeting the beautiful Darkness and resigning himself to lazing around under his kotatsu at all times.

19 The Strongest Sage With The Weakest Crest

Best Isekai Harem Anime

This Best Isekai Harem Anime talk about In a world of magic, the powers and future of a mage are predetermined at birth through so-called “Marks”, four symbols that categorize a human’s aptitude for magic. Lamenting the fact that his mark was considered ill-suited for combat and only useful for magic augmentation, an incredibly skilled sage decided to reincarnate thousands of years in the future. Reborn as Mathias Hildesheimr, a six-year-old boy and the third son of a duke’s family, he attains the mark of close combat he always desired.

Unfortunately, it is also discovered that mankind’s knowledge of magic and swordsmanship has drastically deteriorated in this era; only shoddy magic equipment can be sporadically found, while even the most basic spells have been forgotten. To add insult to injury, his current mark, once hailed as the most powerful, is now viewed as the worst. When Mathias becomes 12 years old, his unrivaled swordsmanship lands him in the Second Royal Academy. Shattering prejudices, he promptly makes ripples in the academy and beyond. However, the former sage uncovers signs of dark forces working in the shadows, and with humanity weaker than ever, it is up to Mathias to thwart their evil plans.

Main Character

Matthias Hildesheimer

Matthias Hildesheimer is the main protagonists of the Shikkakumon no Saikyokenja series. He is the 3rd Son of the Hildesheimer Baronet House. Known as “Gaius” in his previous life around 5000+ years ago; he reincarnated himself as Matthias in order to obtain a new Crest by his Reincarnation magic, which would be better than his “First Crest”. He was able to successfully achieve his goal upon reincarnation in the form of “Fourth Crest”. His main goal in life is to gain power so that he could challenge and fight against the powerful Monsters in Outer Space.

18 The Familiar Of Zero

The Familiar Of Zero

Louise Françoise Le Blanc de La Vallière is a member of the nobility who is terrible at magic, as her attempts usually result in an explosion. She is nicknamed “Louise the Zero” by her classmates, due to her inability to use any of the four magic elements. Early in the school year at the Tristain Academy of Magic, the second year students perform a special ritual where they summon their familiar, which serves as their eternal companion, protector and partner, and is usually some sort of magical creature. But Louise summons Saito Hiraga, an ordinary teenage boy from Japan, leaving her totally humiliated.

Due to the sacredness of the ritual, Louise reluctantly accepts Saito as her familiar, but proceeds to treat Saito as any other familiar, only worse: making him wash her clothes, sleep on a bed of hay, and whipping him with a riding crop whenever he upsets her.

The Familiar of Zerofollows the adventures of Louise and Saito as they help their classmates and friends, while occasionally blundering into situations where they risk their lives to save one another and Tristain. Saito tries to find a way to get back to Japan, but he also gains a mysterious power that allows him to wield swords and other weapons to perform heroic feats. They also eventually learn the truth behind Louise’s magic (in)abilities. As Saito’s and Louise’s friendship grows and they start to work together, they ultimately fall in love with each other.

Main Character

Louise de La Vallière

Louise de La Vallière is the main female protagonist of Zero no Tsukaima. She is the third daughter of the Vallière family, an aristocratic family well known in Tristain. She is currently attending classes in the Tristain Academy of Magic, where she is known as Louise the Zero due to her zero success rate at spell casting and lack of any elemental affinities, a nickname acquired even before the first episode.

17 Aesthetica Of Rogue Hero

Best Isekai Harem Anime

Best Isekai Harem Anime story follows a world where several young men and women regularly find themselves spirited away to a world of sword and magic called Alayzard. Those who survive and return are typically gifted with magic abilities. An international training organization named Babel protects these young returnees and trains them in the use of their power. A wayward hero named Akatsuki has come back to his world, along with a beautiful girl called Miu who is the daughter of the Last Dark Lord, whom he defeated in battle.

Main Character

Akatsuki Ousawa

Akatsuki Ousawa is the main male protagonist of Hagure Yuusha no Estetica. After defeating Galious, the Demon King, he had become known as a True Hero. However, as soon as Akatsuki made the choice to return to Earth while taking Galious daughter who he promised the late Demon King to protect without no one knowing, he became known as a Rogue Hero due to scandal he make when leaving.

After his return to Earth, Akatsuki had enrolled in BABEL along with Myuu under the alias of Miu Akatsuki, his late sister who the latter shared a similar name.

16 The Ambition Of Oda Nobuna

Best Isekai Harem Anime

Suddenly finding himself in the Sengoku period, average high school student Yoshiharu Sagara is about to be killed on the battlefield. He is saved by none other than the man who would later become the respected Toyotomi Hideyoshi, but at the cost of the latter’s life. With the course of history altered as a result of these events, Yoshiharu tries to make things right again.

Yoshiharu, however, is surprised to discover that the people he meets, the places he encounters, and the historical events he is dragged into are somewhat different than what he remembers from his favorite Sengoku era video game Nobunaga’s Ambition.

He soon discovers that, in this version of the Sengoku period, Nobunaga Oda does not exist instead being replaced by a young woman named Nobuna Oda who holds his position as a daimyō. Yoshiharu begins working under Nobuna’s command, who nicknames him saru (サル, monkey), with hopes of correcting the course of history and finding his way back home to the present-day world.

Main Character

Oda Nobuna

Oda Nobuna (織田信奈) is the general, as well as princess of the Oda clan, and ruler of the Owari Province. She became the leader after the death of her father Oda Nobuhide. Called a “fool” by her enemies, Nobuna is actually a very bright and talented young woman, with much knowledge of the world. 

Her main goal is to unite Japan, and turn the country into a power that is on par with the European nations. She serves as the main female protagonist throughout the series. One of her other names is Kichi. She is voiced by Itō Kanae in the anime. She is often depicted with a musket (matchlock) in official art.

15 Tenchi Muyo! War On Geminar

Isekai Harem Anime

Best Isekai Harem Anime. Kenshi Masaki is a 15-year-old boy that has unwillingly traveled from his home on Earth to the alternate world of Geminar (ジェミナー, Jeminā). On Geminar, the countries wage wars using Sacred Mechanoids, humanoid exoskeletal weapons that were originally discovered within ancient ruins and developed over centuries. After being tricked by a mysterious organization into participating in an attempt to assassinate Lashara Earth XXVIII, the young ruler of the Shtrayu Empire, he ends up captured after he chooses not to kill her. Deducing enough about Kenshi to interest her and because his abilities make him an extremely valuable property, Lashara decides to take Kenshi under her protection.

Disguised as her attendant, Kenshi travels with her and her bodyguard Chiaia Flann to the Holy Land, a virtually impregnable fortress that serves as an academy to train Sacred Mechanoid pilots (Mechamasters), most of whom are female. With his kindness, tenacity, and skills that vary from carpentry and cooking to advanced survival techniques, Kenshi eventually becomes a celebrity in the academy, becoming the object of affection of many female students and making some of the male students envious. However, the same organization that deceived Kenshi is secretly working inside and against the academy, and a worldwide conflict is about to begin.

14 No Game No Life

No Game No Life

Sora and Shiro are two hikikomori step-siblings who are known in the online gaming world as Blank, an undefeated group of gamers. One day, they are challenged to a game of chess by Tet, a god from another reality. The two are victorious and are offered to live in a world that centers around games. They accept, believing it to be a joke, and are summoned to a reality known as Disboard. There, a spell known as the Ten Pledges prevents the citizens of Disboard from inflicting harm on one another, forcing them to resolve their differences by gambling with games whose rules and rewards are magically enforced.

In-game, rule enforcement only occurs when the method of cheating is acknowledged and outed by the opponent, allowing players to cheat through discreet methods. Sora and Shiro traverse to Elkia, the nation inhabited by humans, and befriend the duchess Stephanie Dola. Learning about Elkia’s decline, the two participate in a tournament to determine the next ruler; after winning the crown, they earn the right to challenge the Disboard’s other species as humanity’s representative. Their next goal is to conquer all sixteen species in order to challenge Tet to a game; as of the sixth volume, five of the sixteen are under their control.

13 Demon Lord Retry

Demon Lord Retry

Best Isekai Harem Anime. As Akira Ono prepares to shut down the servers of his creation, the MMORPG Infinity Game, he suddenly finds himself in the body of his character, Demon Lord Hakuto Kunai, after an unexplained event. The new world he wakes up in appears to be set within Infinity Game, but with some differences.

He encounters and summons various companions who join him on his travels, and his reputation as “Demon Lord” spreads throughout the land, making him a target. Eventually, Ono/Kunai finds himself having to deal with the sociological problems of the Kingdom of Holy Light and the Satanist cult that opposes it, as he continues to pursue his mission of finding out why and how he was summoned.

12 Clannad Series

Best Isekai Harem Anime

A high school student who cares little about school or others meets a lonely girl who had to repeat a year while all her friends finished high school. He decides to hang out with her and soon meets more friendly students.

11 High School Prodigies Have It Easy Even In Another World

Best Isekai Harem Anime

The series revolves around seven high school students who are internationally renowned for their exceptional abilities. They include Prime Minister Tsukasa Mikogami, genius inventor Ringo Ohoshi, former ninja and journalist Shinobu Sarutobi, world renowned doctor Keine Kanzaki, swordswoman Aoi Ichijo, skilled magician Prince Akatsuki and multi-millionaire Masato Sanada. One day, they survive a plane crash only to find themselves in a medieval fantasy world called Freyjagard.

In this world, two human races live side by side in a somewhat feudal society: the Byuma, who possess animal features and formidable strength, and the Hyuma, who possess limited magical aptitude. After being rescued by a Byuma named Winona and her adopted Elven daughter Lyrule, the group decides to repay the people of Elm Village by using their advanced skills and knowledge to revolutionize the village and its culture.

The group also learns of an ancient legend, that narrates how an evil dragon was slain by seven heroes who came from another world. Believing that there is a connection between the legend and their present situation, Tsukasa, who is also the leader of the group, directs the others to learn about this new world and also search for any clues that could lead them back to Earth.

However, the group’s ideas become a threat to the ruling Freyjagard Empire, who promote state atheism and social Darwinist belief that only the strong nobility shall rule and the weak commoners must obey the nobles or suffer punishment. The conflict with the Empire soon leads the Seven Prodigies to create a new nation with equal rights and democracy for the people.

10 Arifureta: From Commonplace To World’s Strongest


Best Isekai Harem Anime. High-schooler Hajime Nagumo is bullied by his classmate for his relationship with the class idol, Kaori. When he and the rest of his class are transported to a fantasy world, all of his classmates get powerful magical abilities, while Hajime only gains the basic alchemical magic to transmute solid materials, a common ability usually found in craftsmen and smiths.

During a dungeon raid, he is betrayed by one of his classmates and dropped to the bottom of the dungeon. He survives the fall and creates weapons to escape the dungeon and become stronger. On his journey, he meets with the imprisoned vampire Yue, and later is joined by the bunny-eared Shea, the perverted dragon Tio, and others.

Main Character

Hajime Nagumo

Hajime Nagumo (ぐもハジメ, Nagumo Hajime)is the titular main protagonist and anti-hero of the “Arifureta Shokugyou de Sekai Saikyou” series. He was originally a member of the Hero Party, where he was ostracized for receiving the commonplace “Synergist” job and his weak stats, until his presumed death in the Orcus Labyrinth, after which he discovered the truth about the world and made it his goal to return to Japan at all costs.

He mutated into a monster hybrid when he devoured the meat of the monsters, and is no longer considered to be a pureblooded human anymore.

9 Mushoku Tensei: Jobless Reincarnation

Mushoku Tensei: Jobless Reincarnation

A 34-year-old Japanese NEET is evicted from his home following the death of his parents. After some introspection, he concludes that his life was ultimately pointless. Seeing a speeding truck heading towards a group of teenagers, he decides to intervene in an attempt to achieve something meaningful in his life at least once, and manages to save one of them from harm before passing away.

Waking up in a baby’s body, he soon realises that he has been reincarnated in a heroic fantasy world with a medieval European atmosphere. He sets out to succeed in his new life, discarding his old identity for that of Rudeus Greyrat, son of the lower nobility. Due to his genetic factor and early training, Rudeus becomes extremely gifted in magic.

During his childhood, he became a student of Roxy Migurdia, a demoness, and later befriended Sylphiette, an elf. He later serves as a teacher for Eris Boreas Greyrat, his cousin. When a magical cataclysm teleports them away from home, Rudeus decides to escort Eris home. During his journey, Rudeus receives advice from the mysterious Hitogami and becomes friends with Ruijerd Speldia, whose honour he aims to restore.

8 Outbreak Company

Outbreak Company

Shin’ichi Kanō is a young otaku boy who is offered a job for his extensive knowledge of anime, manga and video games. However, after his first meeting with his new employer, he is kidnapped and wakes up in an alternative fantasy world. Shin’ichi is then informed that he is in fact selected by the Japanese government to help improve diplomatic relations with the “Holy Eldent Empire” and to spread moe culture in this potential new market.

Main Character

Kanō Shin'ichi

Kanō Shin’ichi (加納 慎一(かのう しんいち), Kanō Shin’ichi?) is the main protagonist of Outbreak Company series. His parents are light novel artists and eroge illustrators making his lifestyle of otakuism pretty much genetic. He learned the hardships of being an otaku after confessing to his childhood friend, where she denied him, just because he was an otaku. He was so depressed, that he dropped out of school and became a NEET for a year, before his parents gave him a choice, rejoin society or be disowned. Having little choice, he looked for a job. He found a fishy job for otaku and took it, opening the doors towards his future.

7 Ouran High School Host Club

Best Isekai Harem Anime

The comedic series revolves around the escapades of Haruhi Fujioka, a scholarship student at the prestigious Ouran Academy, a fictitious school for rich kids located in Bunkyo, Tokyo. Looking for a quiet place to study, Haruhi stumbles upon the abandoned Third Music Room, a place where the Ouran Academy Host Club, a group of six male students, gathers to entertain female “clients” with sweets and tea.

During their initial encounter, Haruhi accidentally destroys an antique vase valued at ¥8,000,000 (around US$80,000) and must work off the debt as the club’s errand boy. Her short hair, slouching attire, and gender-ambiguous face cause her to be mistaken by the Hosts for a male student, though they soon realize her actual gender and the fact that she’s a “natural” in entertaining girls, promoting her to full-Host status.

6 The Master Of Ragnarok & Blesser Of Einherjar

Best Isekai Harem Anime

This Best Isekai Harem Anime Story talk about Yuuto Suoh is a fourteen-year-old second-year junior high student who is knowledgeable about urban legends. One night, in his quest to discover if the urban legend of the local Tsukimiya Shrine was true, he irreversibly discovered that the legend was not a sham. Forcibly separated from his childhood friend and love of his life, Mitsuki Shimoya, Yuuto appeared in another world with heavy similarities to Norse mythology (while doing research on the world, he discovered that the “other world” wasn’t truly another world but was an Earth in the distant past, specifically, 2000-1300 BC, the Late Bronze Age).

In his quest for survival, Yuuto inadvertently rose to become the patriarch of the Wolf Clan, the family that had taken him in upon his summoning, by using the modern knowledge provided to him by his smartphone that he had unwittingly brought with him to the other world. Despite winning the affections of multiple Einherjars, magic-wielding warrior maidens, Yuuto has but one goal: to return to the side of his childhood friend and one true love (although this does not stop the other girls from trying to win him over).

5 In Another World With My Smartphone

In Another World With My Smartphone

Fifteen-year-old Touya Mochizuki is accidentally killed by God. As an apology, God allows him to be resurrected, but since he cannot send him back to his old world, he instead reincarnates him into a fantasy world along with any special requests. Touya requested to bring his smartphone into the new world with him, which God modifies. As such, while Touya cannot contact his old world with it, the phone can be easily recharged by magic and can otherwise function such as accessing data from the old world and can use relevant features for his new world such as the GPS function to locations which are comprehensively identified on it.

God also greatly amplifies Touya’s physical, magical, and cognitive abilities to a certain degree as a further apology for the inconvenience of killing him. Taking full advantage of his second chance at life, Touya befriends many different people, mainly women and high-ranking people in the new world. He begins to travel from country to country, solving political disputes, minor quests, and nonchalantly

4 Re: Zero – Starting Life in Another World

Re: Zero

This Best Isekai Harem Anime talk about Subaru Natsuki is a NEET who is suddenly summoned to a fantasy-like world. Just after arriving, he is killed while trying to help a young half-elf he befriends, Emilia, who is a candidate to become the next ruler of the Kingdom of Lugunica, only to revive some hours in the past. After dying some times, Subaru realizes that he has the power to turn back time after his death. After successfully helping Emilia, Subaru starts living in one of the Mansions of the Roswaal Mathers as a butler.

Out of gratitude and affection for Emilia, Subaru makes use of his newfound ability to protect her and help on her ambition to be successfully appointed as the next queen, also providing assistance to other friends he makes along the way, while suffering due to the pain inflicted on him every time he dies, and carrying along the memories of everything that happened before his power activates, which is forgotten by everybody except for him.

3 Overlord


Best Isekai Harem Anime story begins in Yggdrasil, a successful online virtual role-playing game that is about to close down after 12 years. The main protagonist, Momonga, has a hard time accepting this, has no family, no friends, no girlfriend, and finds no meaning in living in ‘reality’. He is the leader of one of the top 10 guilds in the game, the Ainz Ooal Gown guild, which is made up exclusively of ‘non-human’ characters and is headquartered in the ‘Great Tomb of Nazarick’. Of the 41 members of the guild, only its leader and NPCs remain, characters created by the members to protect the tomb. Momonga decides to remain immersed in the game until the forced disconnection.

To his great surprise, at the announced time of the servers’ shutdown, instead of returning to the real world, he is sent to a new world. He soon realises that the NPCs seem to have their own will and, above all, that they have become truly alive, with body odours or a pulse and, above all, feelings. He tries to discover this world and will try to make himself known under the name of his famous guild: Ainz Ooal Gown. In this new and unknown world, where the magic he used in Yggdrasil still works and where most of the monsters from the old game have become real, he chooses this new name, hoping to find other players who, like him, have found themselves sent to this world.

2 Sword Art Online

Sword Art Online SAO

Best Isekai Harem Anime. In 2022, a virtual reality massively multiplayer online role-playing game (VRMMORPG) called Sword Art Online (SAO) will be released. With the NerveGear, a helmet that stimulates the user’s five senses via their brain, players can experience and control their in-game characters with their minds. Both the game and the NerveGear were created by Akihiko Kayaba. On November 6, 10,000 players log into SAO’s mainframe cyberspace for the first time, only to discover that they are unable to log out. Kayaba appears and tells the players that they must beat all 100 floors of Aincrad, a steel castle which is the setting of SAO if they wish to be free. He also states that those who suffer in-game deaths or forcibly remove the NerveGear out-of-game will suffer real-life deaths.

One of the players named Kazuto “Kirito” Kirigaya, is one of 1,000 testers in the game’s previous closed beta. With the advantage of previous VR gaming experience and a drive to protect other beta testers from discrimination, he isolates himself from the greater groups and plays the game alone, bearing the mantle of “beater”, a portmanteau of “beta tester” and “cheater”. As the players progress through the game Kirito eventually befriends a young girl named Asuna Yuuki, forming a relationship with and later marrying her in-game. After the duo discover the identity of Kayaba’s secret ID, who was playing as “Heathcliff”, the leader of the guild Asuna joined in, they confront and destroy him, freeing themselves and the other players from the game.

1 Isekai meikyū de Hāremu wo 

Isekai Meikyuu de Harem wo

This Best Isekai Harem Anime talk about Michio Kaga, wishing to end his life, decides to look for a way to do it on the Internet.

He comes across a strange site that asks him questions with a points system to choose the characteristics of a character. After filling in the questionnaire, he is told: “Beware! In order to live in the new world, you must reject your current world. Once you have left, it is impossible to return. Do you want to continue? Without paying any attention, Michio clicks on “Yes” and finds himself propelled into another fantasy world, with video game mechanisms but very real, and where slavery, brigandage and murder are commonplace.

Following his first successful quest against an attack of brigands on the small village where he appeared, Michio lands in the town of Vale and is brought by circumstances into contact with a slave trader who convinces him to buy Roxanne, a young and lovely Wolf-Girl with a dreamy body and still a virgin: However, as he does not have the means to acquire her immediately, the conciliatory merchant offers him a reservation period on Roxanne of a few days to raise the sum, which seems hardly feasible in his current situation as a beginner.

However, Michio, who is charmed by the beautiful girl and motivated to get her at any cost, will accelerate his learning of this world and will work hard to increase his abilities, as well as the money from the quests and the value of his collection items, even if it means taking personal risks in order to make the payment in time. As time goes by, he will acquire various girls and build up a group.

Main Character

Michio Kaga ( 加賀 道夫 ) is the main character of Best Isekai Harem Anime Slave Harem in the Labyrinth of the Other World. He is a normal person from Earth who was somehow transported to the Other World.


Michio is a normal looking young man who normally wears a jersey under everything. He has purplish eyes and hair. His hairstyle notably changes subtly as the story progresses; small tufts of hair to the sides of his head stick up like devil horns (a sign of his deviousness).


Harem in the labyrinth

In the beginning, Michio was melancholic. Because he lived a life of being perpetually bullied, being physically abused primary school and treated as an outcast in high school, he felt agitation towards most of his peers and believed that the world is rotten.

After he agreed to enter the new world he thought was just a game, he acted like he would normally play a game. When he realized that he couldn’t log out, Michio became more cautious and started acting more logical with his survival as his #1 priority.


Kaga Michio From harem in the labyrinth of another world

Michio lived a life of being perpetual bullied. In primary school he was physically abused so he learned kendo and aikido making him quite strong. When he reached high school he was treated as an outcast. Disinterested with the world he lived in, one day while looking over a suicide website without any real intention of suicide, an ad for what looked like a fantasy MMORPG caught his eye.

In Best Isekai Harem Anime Clicking on the ad, he made his way through the process of what seemed like typical character creation, but before he could choose his stat settings he had to play a roulette-like game on a page labelled as a “bonus points page”. The first couple of times he received low scores usually in the 10s and 20s but since he enjoyed attempting to get the highest he could obtain he played it until he received a 99.

Utilizing his bonus points, Michio tinkered with his character settings discovering that he can reset his stats at anytime since he had achieved rolling 99 bonus points. He moved his stats around until he was satisfied and clicked a button agreeing that he was ready to throw away his current world and live in another.

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