Harem anime with an overpowered main character have been getting more popular by the second, and why wouldn’t they? An overpowered main character and a harem of beautiful women is a combination that gives you that sweet dopamine.
Although a lot of people who’ve gotten bored of the typical tropes of isekai/harem anime, there are still a lot of people who still either enjoy watching them or watch them out of habit.
So, if you’re one of the people who still enjoy watching anime, here’s a list of 25 Best Harem Anime With OP MC!
25. Death March Into The Parallel World Rhapsody
Japanese Title: Death March kara Hajimaru Isekai Kyousoukyoku | Studio: SILVER LINK., Connect | Episodes: 12
Ichirou Suzuki, a programmer in his thirties, is overburdened with work. Worn out, he eventually has a chance to catch up on sleep, only to wake up in a fantasy RPG world that is a mash-up of the games he was debugging in reality. In this new location, he notices that not only has his appearance changed to that of a younger version of himself, but his name has also changed to Satou, a nickname he used while running game beta tests.
However, before Satou can fully comprehend his situation, an army of lizardmen attacks him. Satou is forced to cast a powerful spell in retaliation, and his level is increased to 310, effectively maximizing his stats. Satou sets out to explore this magical new world as a high-leveled adventurer armed with a plethora of skills and no way to return to reality.
24. Is This A Zombie?
Japanese Title: Kore wa Zombie desu ka? | Studio: Studio Deen | Episodes: 12
Ayumu Aikawa, a 16-year-old high school student, is tragically killed while looking into a suspicious house. He soon wakes up next to a strange armored girl named Eucliwood Hellscythe. She reveals herself to be a necromancer who has resurrected Ayumu, transforming him into a zombie!
Ayumu, now immortal, sets out to find his killer. One day, while searching in a cemetery, he comes across Haruna, a boisterous young girl dressed as a magical girl who is fighting a bear with a chainsaw. Haruna tries to erase Ayumu’s memories of her after she kills the beast, but he instead absorbs her magic for himself. Haruna has stripped Ayumu of her abilities and assigned her to the task of hunting strange creatures known as “Megalo,” monsters that roam the human world and terrorize the population.
Is This a Zombie? follows the daily exploits of human-turned-zombie Ayumu as he begins his new, bizarre life in which the supernatural has become the norm.
23. Blade Dance of the Elementalers
Japanese Title: Seireitsukai no Blade Dance | Studio: TNK | Episodes: 12
Kamito Kazehaya encounters a naked Claire Rouge on his way to Areishia Spirit Academy, a student who had been bathing as part of a purification ceremony. She was preparing to enter into a contract with a powerful spirit in order to increase her power as an “Elementalist.” Her efforts, however, are for naught when Kamito obtains the spirit despite the fact that only shrine maidens can become elementalists. To make matters worse, Claire then declares that Kamito must become her contracted spirit instead!
Kamito escapes Claire on the school grounds and meets Headmaster Greyworth Ciel Mais, who invites him to enroll at the academy. Although his life as the only male student among the shrine princesses-in-training at Areishia will be difficult, he accepts grudgingly in exchange for information about his former contracted spirit, Restia Ashdoll. In addition, he must fulfill Greyworth’s main request: win the Blade Dance, a battle festival taking place in two months where he will face the strongest Elementalist rumored to be contracted with a dark spirit.
22. The Fruit of Evolution: Before I Knew It, My Life Had It Made
Japanese Title: Shinka no Mi: Shiranai Uchi ni Kachigumi Jinsei | Studio: Hotline| Episodes: 12
One day, a man claiming to be a god suddenly hacks a certain school’s intercoms, ordering all of its students to team up and prepare to be transported to another world. They will be given special abilities in the hopes of becoming heroes of that world and defeating the Demon King who ravages the land.
The initial transfer goes well. Seiichi Hiiragi, on the other hand, is left behind because no one wants to be his teammate because he is constantly bullied by his classmates because of his somewhat undesirable appearance. Nevertheless, the self-proclaimed god decides to send Seiichi to the parallel world and lets him join his peers. Unfortunately, this fateful ordeal causes Seiichi to arrive at a location deep in the forest, far not only from his schoolmates but from human civilization as well.
The term “responsibility” refers to the act of determining whether or not a person is responsible for his or her own actions. When all seems lost, Seiichi discovers a strange fruit known as the “Fruit of Evolution,” which may be his first step toward a much brighter future.
21. World Break: Aria of Curse for a Holy Swordsman
Japanese Title: Seiken Tsukai no World Break | Studio: Diomedéa| Episodes: 12
World Break takes place at Akane Private Academy, where students with memories of previous lives are being trained to use Ancestral Arts as defenders against monsters known as Metaphysicals who attack at random. The students, known as saviors, are divided into two groups: Kurogane, who can summon offensive weapons with their prana, and kuroma, who can use magic.
The story begins six months before the series’ major climax, during the opening ceremonies on the first day of school. After the ceremony, Moroha Haimura meets a girl named Satsuki Ranjou, who reveals that she was Moroha’s little sister in a previous life when Moroha was a heroic prince capable of slaying entire armies with his sword skills. Soon after, he meets another girl, Shizuno Urushibara, who eventually reveals that she also knew Moroha in a previous life when he was a dark lord capable of using destructive magic but saved her from slavery. Can people who live in the present and the past truly have a bright future? Explore the intricate world of World Break to find out!
20. Infinite Stratos
Japanese Title: IS: Infinite Stratos | Studio: 8bit| Episodes: 2 Seasons with 12 Episodes Each + 4 OVAs
Infinite Stratos (IS), a Japanese exoskeleton weapon, can only be piloted by women. Its power and combat prowess are so immense that an international treaty prohibiting its use as a military asset has been signed.
When it is discovered that 15-year-old Ichika Orimura is the only male capable of piloting an IS, he is forced to enroll in the Infinite Stratos Academy, an all-female boarding school whose graduates go on to become IS pilots. Ichika is reunited with two of his childhood friends, Houki Shinonono and Lingyin Huang, at this training school, and befriends Cecilia Alcott, an IS representative from the United Kingdom.
Guided by the legendary pilot Chifuyu Orimura—their strict homeroom teacher and Ichika’s older sister—Ichika and the girls will need to use everything at their disposal to defend themselves and their academy from the dangers that will arise during their exciting school life.
19. The Aesthetica of a Rogue Hero
Japanese Title: Hagure Yuusha no Aesthetica | Studio: Arms| Episodes: 12 + 6 Specials (3 min each)
Thousands of young people have traveled to fantasy worlds since the discovery of “Samon Syndrome” 30 years ago, with only a few returnees retaining the special abilities they acquired in those parallel universes.
Akatsuki Ousawa, dubbed the “Rogue Hero,” abandons his peaceful life in the fantasy world Alayzard in order to face new challenges when he returns to Earth. He returns with Miu, the daughter of the Demon King he defeated, and is now forced to conceal her true identity by posing as his younger sister. The two are soon accepted into Babel, a special school for those who have gained special abilities and magical powers as a result of their journey to a fantasy world.
Babel appeared to be founded to train young interdimensional travelers and “guide them to the right path for the sake of humanity and themselves,” but the pseudo-siblings are unsure of its true purpose. Will Akatsuki and Miu be able to overcome the hostile, powerful student council and uncover the hidden forces at work?
18. Yuuna and the Haunted Hot Springs
Japanese Title: Yuragi-sou no Yuuna-san| Studio: Xebec| Episodes: 12
Yuragi-sou, once a hot springs inn and now a boarding house with ridiculously low rent, is almost deserted except for a few odd residents. According to legend, it is haunted by a vile ghost who scares away all potential tenants. As a result, it is the ideal refuge for Fuyuzora Kogarashi—a broke, homeless psychic looking for a place to stay and ghosts to exorcise.
Kogarashi prepares for a fight with the ghost, only to discover that it is not as evil as the rumors suggest. Instead, it is the ghost of a lovely silver-haired girl whose only memory of life before death is her name: Yuuna. Even more perplexing is the fact that the other tenants of Yuragi-sou not only see Yuuna, but each has their own supernatural ability.
Kogarashi attempts to uncover the regret that keeps Yuuna anchored to the world of the living, lest she becomes an evil spirit sentenced to spend her afterlife in hell, amidst the chaos caused by his eccentric fellow residents.
17. Asterisk War
Japanese Title: Gakusen Toshi Asterisk| Studio: A-1 Pictures| Episodes: 2 Seasons of 12 Episodes Each
In the previous century, an unprecedented disaster known as the Invertia reshaped the world. Existing nations’ powers dwindled dramatically, allowing the Integrated Empire Foundation to seize control. More importantly, the Invertia gave birth to a new species of human, the Genestella, who are born with extraordinary physical abilities. Its elite are chosen at random from all over the world to attend the top six schools and compete in entertainment battles known as Festas.
Ayato Amagiri is a scholarship transfer student at the prestigious Seidoukan Academy, which has recently been plagued by poor performance. Through a series of events, he accidentally sees Julis-Alexia von Riessfeld, the popular Witch of Resplendent Flames, half-dressed! Julis, enraged, challenges him to a duel for invading her privacy. After the student council president cancels the duel, Ayato reveals that he has no interest in Festas. Instead, he has enrolled in the academy in order to find his missing elder sister. When a more nefarious plot emerges, Ayato sets out to win despite being surrounded by some of the most talented Genestella on the planet.
16. Beast Tamer
Japanese Title: Yuusha Party wo Tsuihou sareta Beast Tamer, Saikyoushu no Nekomimi Shoujo to Deau| Studio: EMT Squared| Episodes: 13
Among all the beasts that roam the world, there are a few “ultimate species” that have immense strength and magical prowess and are considered to be at the pinnacle of power. As a result, many humans covet their abilities, pushing some of these species to extinction.
Rein Shroud, as a beast tamer, can enlist the help of various animals for a variety of tasks, including reconnaissance and logistics. He joins a party led by the vile and manipulative hero Arios Orlando, only to be expelled after six months due to his ineffectiveness as a non-combative class.
Rein, however, is an exception among beast tamers, unbeknownst to the team that cast him away. When he meets Kanade, a cat spirit who is also one of the ultimate species, and is able to form a contract with her, his potential becomes clear. Rein embarks on his adventure as an adventurer, steadily rising through the ranks and meeting more ultimate species along the way.
15. Demon King Daimao
Japanese Title: Ichiban Ushiro no Daimaou| Studio: Artland| Episodes: 12
Akuto Sai transfers to Constant Magic Academy, where he meets Junko Hattori, a virtuous ninja clan member, and dreams of changing the world for the better. On their way to the academy, they vow to make the world a better place together; however, when he arrives, the situation takes a turn for the worse—it is prophesied that he will become the Demon King!
As word of his fate spreads, the school begins to fear him, and Junko’s faith in him begins to wane. While Akuto is determined not to let his fate be determined by his predicted future, it appears that everything he says and does only serves to reinforce the fact that he is destined to be the Demon King. Furthermore, he is surrounded by a harem of beautiful girls, each with their own plan for him, which ranges from bringing him to justice to simply showering him with love. With his newly awakened powers, Akuto must deal with his ever-growing list of misfortunes while fighting to prove that his fate is not predetermined.
14. The Greatest Demon Lord is Reborn as a Typical Nobody
Japanese Title: Shijou Saikyou no Daimaou, Murabito A ni Tensei suru| Studio: SILVER LINK., Blade| Episodes: 12
Varvatos had attained the pinnacle of human potential and was so powerful that the rest of humanity began to refer to him as the Demon Lord, both fearing and respecting his overwhelming power. As a result, he felt alienated from his fellow humans, prompting him to yearn for true companionship—someone he could call a friend.
Varvatos decides to reincarnate three thousand years later as Ard Meteor, the son of a seemingly ordinary couple in a rural town, hoping that his fate will change in his next life. Unfortunately, he realizes that even after weakening himself, his strength still dominates this era. Furthermore, his lack of social skills prevents him from accomplishing his goal of making friends. Worst of all, the consequences of abruptly leaving his previous position have begun to bite him in the most unexpected ways.
13. The 8th Son? Are You Kidding Me?
Japanese Title: Hachi-nan tte, Sore wa Nai deshou!| Studio: SynergySP, Shin-Ei Animation| Episodes: 12
Shingo Ichinomiya, 25, awakens in a new world and realizes he is in the body of a six-year-old. Shingo learns from his memories of his stressful life working at a firm that the person he is occupying is Wendelin Von Benno Baumeister, the eighth son of a poor noble family living in the countryside. Wendelin, now aware of his bizarre situation, strives to improve his financial and social standing. The term “electronic commerce” refers to the sale of goods and services over the internet.
12. In Another World With My Smartphone
Japanese Title: Isekai wa Smartphone to Tomo ni.| Studio: Production Reed| Episodes: 12
God, in a thoughtless blunder, accidentally kills Touya Mochizuki with a stray bolt of lightning! As an apology, God offers him one wish and the chance to live again in a magical fantasy world. Touya happily accepts the offer and, for his one wish, asks only to keep his smartphone with him as he begins his journey into this mysterious world.
Starting over in this new world, Touya discovers it is full of magic, which he enjoys, and cute girls vying for his attention. These girls—the twins Linze and Elze Silhoueska, Yumina Urnea Belfast, Leen, and Yae Kokonoe—provide Touya with endless romantic frustrations as he discovers the secrets of this new world.
11. The World’s Finest Assassin Gets Reincarnated in Another World as an Aristocrat
Japanese Title: Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru| Studio: SILVER LINK., Studio Palette| Episodes: 12
The world’s most deadly assassin had sworn lifelong loyalty to the organization that had raised him. However, despite his loyalty, that very same organization takes action to silence him, ultimately leading to his demise. Drowning in frustration and regrets he can no longer suppress, he finds himself in an audience with a goddess attracted by his exceptional skills. The goddess offers him reincarnation into a magnificent world of swords and magic so he can perform a crucial mission: prevent that world’s destruction by slaying its hero.
Accepting the goddess’ request, he is reborn as Lugh Tuatha Dé, the son of an Alvan Kingdom noble family of assassins. Lugh learns new assassination techniques from his father, which differ significantly from the cold-blooded and unsympathetic killing style of his previous life. His other talents also blossom, allowing him to meet new allies and acquaintances. Even so, Lugh realizes that his efforts are insufficient because a titanic foe like the hero can only be defeated with perfection.
10. The Hidden Dungeon Only I Can Enter
Japanese Title: Ore dake Haireru Kakushi Dungeon| Studio: Okuruto Noboru| Episodes: 12
Noir Stalgia, despite his noble title, is at the bottom of the social hierarchy. As a result, his fellow nobles oppress him and treat him as garbage. He does, however, have a rare but powerful ability to communicate with the Great Sage, an oracle who can tell Noir the answer to any question.
Noir decides to join the Hero Academy after failing to find work as a librarian. He understands that he must strengthen himself in order to enter the institution. The Great Sage suggests he investigate a hidden dungeon deep within the mountains. Noir meets Olivia Servant, a beautiful but enslaved maiden trapped within the labyrinth, there. Olivia bestows on Noir a set of ridiculously powerful abilities that give him nearly total control over reality. There is, of course, a catch: every time Noir attempts to use his powers, his life points decrease, putting his life in jeopardy. To recharge his batteries, he must indulge in worldly pleasures such as kissing his childhood friend!
9. How NOT to Summon a Demon Lord
Japanese Title: Isekai Maou to Shoukan Shoujo no Dorei Majutsu| Studio: Ajia-Do| Episodes: 2 Seasons of 12 Episodes Each
Nobody can match the power of the Demon King Diablo in the fantasy MMORPG Cross Reverie. He overpowers all who are foolish enough to confront him, as he possesses the game’s rarest artifacts and an unrivaled player level. Despite his terrifying reputation, Diablo’s true identity is Takuma Sakamoto, a reclusive gamer with no social skills. Takuma cares about nothing but his virtual life, defeating hopeless challenges day after day—that is, until a summoning spell suddenly transports him to another world where he has Diablo’s appearance!
Takuma is greeted in this new world that resembles his favorite game by the two girls who summoned him: Rem Galeu, a petite Pantherian adventurer, and Shera L. Greenwood, a busty Elf summoner. In an attempt to subjugate him, they perform an Enslavement Ritual, but the spell backfires, and they become his slaves instead. Takuma decides to accompany the girls in finding a way to unbind their contract while learning to adapt to his new life as the menacing Demon King, as the situation becomes more awkward than ever.
8. Immoral Guild
Japanese Title: Futoku no Guild| Studio: TNK| Episodes: 12
Kikuru Madan, despite having a good reputation as one of the most experienced guards in the local guild of Mebuki, believes he has wasted his youth and wishes to spend the rest of it like any other person. His conscience, however, prevents him from retiring for the time being, as he is concerned about the guild’s future without him.
Enome, the guild’s receptionist, assigns Kikuru four new recruits as if to assist him in finding his successor: the energetic beast woman Hitamu “Hitamuki” Kyan, the prodigy Maidena Ange, the laid-back Toxico Dannar, and the stalwart Hanabata Nohkins. Although each of them has significant talents, they also have characteristics that limit their potentials, such as Hitamu’s extreme clumsiness and Hanabata’s unintentional perversity.
As if that wasn’t enough, the monsters outside Mebuki’s walls begin acting strangely by salaciously targeting women, causing the party endless problems in more ways than one. Nonetheless, Kikuru is determined to retire early; in order to do so, the guidance he provides to the trainees will be critical.
7. Arifureta: From Commonplace to World’s Strongest
Japanese Title: Arifureta Shokugyou de Sekai Saikyou| Studio: asread., White Fox| Episodes: 2 Seasons With 13 & 12 Episodes + 4 Specials + 2 OVAs + 1 ONA
Hajime Nagumo’s ordinary life is upended when he and his classmates are summoned to a fantasy world and tasked with saving humanity. While his classmates have impressive combat abilities, Hajime is mocked for only gaining an inferior transmutation skill with no real offensive power.
Hajime is betrayed by one of his classmates during an expedition in the Great Orcus Labyrinth, plunging him to the bottom of an abyss. Despite surviving the fall, Hajime is confronted with menacing monsters and misfortunes that send him into a bleak nightmare. Desperate to live and return home one day, he decides to fight for his life—only to meet Yue, an imprisoned vampire who is also trying to escape the labyrinth. Yue and a few others accompany Hajime on his journey to find a way back home, while gradually transforming from commonplace to the world’s strongest.
6. Harem in the Labyrinth of Another World
Japanese Title: Isekai Meikyuu de Harem wo| Studio: Passione| Episodes: 12
Michio Kaga, a high school student, attempts to launch a strange online game he discovered while browsing the internet one day. Instead, he is transported to a rural village in the game’s world, where he is given special abilities and a powerful sword. After gathering his thoughts, he finds himself fighting bandits and quickly realizes that he cannot log out. Michio, resigning himself to fate and accepting this reality, embarks on a journey to enjoy his new life, conquer dungeons for money, and build a harem to satisfy all his manly desires.
5. Trinity Seven
Japanese Title: Trinity Seven| Studio: Seven Arcs Pictures| Episodes: 12 + 2 Movies + 1 OVA
The bright red sun stopped shining one day, resulting in the “Breakdown Phenomenon”—the destruction of Arata Kasuga’s town and the disappearance of its inhabitants. All is not lost, however, because Arata can artificially reconstruct his world by using the magical grimoire given to him by his childhood friend and cousin Hijiri Kasuga.
Lilith Asami appears in front of Arata, whose artificial world suddenly disintegrates, to investigate the phenomenon. He has two options: hand over the book or die. Arata, on the other hand, chooses the third option: enrolling in the top-secret magic school Royal Biblia Academy, where he will be joined by six other magical users. These six, along with Lilith, form the Trinity Seven, the school’s elite who each bolster their own power and skill.
With the desire to save Hijiri and the assistance of his newfound friends, Arata will go to any length to save his beloved hometown and bring his best friend back.
4. Date A Live
Japanese Title: Date A Live| Studio: AIC PLUS+| Episodes: 4 Seasons (12+10+12+12) + 2 Movies + 2 OVAs
Thirty years ago, the Eurasian continent was devastated by a supermassive “spatial quake”—a phenomenon involving space vibrations of unknown origin—resulting in the deaths of over 150 million people. Since then, these quakes have struck the world on an irregular basis, albeit on a smaller scale.
Shidou Itsuka appears to be an ordinary high school student who lives with his younger sister, Kotori. When an impending spatial quake threatens Tengu City’s safety, he rushes to save her, only to be caught in the ensuing eruption. At its source, he discovers a mysterious girl who is revealed to be a “Spirit,” an otherworldly entity whose appearance causes a spatial quake. Soon after, he becomes involved in a battle between the girl and the Anti-Spirit Team, a ruthless strike force dedicated to the annihilation of Spirits.
However, there is a third party who believes in the salvation of the spirits: “Ratatoskr,” which is surprisingly led by Shidou’s younger sister! Following the battle, Kotori forcibly recruits Shidou, offering him an alternative method of dealing with the Spirits’ threat—making them fall in love with him. Now, the fate of the world rests on his dating prowess, as he seeks out Spirits in order to charm them.
3. High School DxD
Japanese Title: High School DxD| Studio: TNK| Episodes: 4 Seasons (12+12+12+12) + 4 OVAs + 7 Specials
Issei Hyoudou, a high school student, is your typical pervert who spends his days peeping on women and fantasizing about having his own harem one day. When a beautiful girl asks Issei out on a date, things appear to be looking up for him, but she turns out to be a fallen angel who brutally kills him! However, he is given a second chance at life when beautiful senior student Rias Gremory, a top-class devil, resurrects him as her servant, recruiting Issei into the school’s Occult Research club.
Issei must train and fight to survive in the violent world of angels and devils as he slowly adjusts to his new life. Each new adventure leads to many hilarious (and risqué) moments with his new comrades, all while keeping his new life a secret from his friends and family!
2. Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs
Japanese Title: Otome Game Sekai wa Mob ni Kibishii Sekai desu| Studio: ENGI| Episodes: 12
An ordinary man is blackmailed into playing a dating simulator set in a matriarchy, and he must endure the unbearable and perplexing world until he completes the game. After countless days of grinding, he finally manages to beat it, but his hardcore gaming comes at a cost: extreme sleep deprivation and hunger.
While on his way to the convenience store to solve one of these issues, the man falls down the stairs and becomes unconscious, only to awaken to the worst-case scenario: he has been reincarnated into the game as the mob character Leon Fou Bartfort. Now trapped in a world he despises, Leon must use his knowledge of the game to safely navigate the plot and sustain himself in a society where the odds are stacked heavily against him.
1. Mushoku Tensei: Jobless Reincarnation
Japanese Title: Mushoku Tensei: Isekai Ittara Honki Dasu| Studio: Studio Bind| Episodes: 2 Parts (11+12)
Despite being bullied, scorned, and oppressed all of his life, a 34-year-old shut-in still found the resolve to attempt something heroic—only for it to end in a tragic accident. In an unexpected turn of events, he awakens in another world as Rudeus Greyrat, resuming his life as a baby born to two loving parents.
Preserving his memories and knowledge from his previous life, Rudeus quickly adapts to his new environment. With the mind of a grown adult, he starts to display magic talent that exceeds everyone’s expectations, honing his skill with the help of a mage named Roxy Migurdia. The term “responsibility” refers to the act of determining whether or not a person is responsible for his or her own actions.
As Rudeus’ second chance at life begins, he tries to make the most of his new opportunity while conquering his traumatic past. And maybe one day he’ll find the one thing he couldn’t find in his previous life: love.
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