We’ve all seen how popular the isekai genre has become in recent years, and the same can be said for the harem and ecchi genres. So we thought, why not compile a list of anime from all three genres? So, here is our list of the Top 10 Isekai Ecchi Harem Anime You Should Watch!
For those of you who are unfamiliar with isekai, it is a sub-genre in which the main character is transported to another world, which is usually a world of mediaeval fantasy with swords and magic! Some popular anime from the isekai genre include That Time I Got Reincarnated as a Slime, Re: Zero, and Overlord.
Isekai Ecchi Harem Anime Recommendations
10. The Master of Ragnarok & Blesser of Einherjar
Some urban legends should be avoided! Yuuto Suou gets more than he bargained for when he joins his childhood friend Mitsuki Shimoya in testing an urban legend. He is whisked away into another world steeped in the lore of old Norse myths when he uses his phone to take a selfie with the divine mirror at the local shrine.
Using his school knowledge and his solar-powered smartphone, he has the chance to bring the Wolf Clan, the people who cared for him, to prominence, all while earning the adoration of the Einherjar, a group of magical-wielding warrior maidens.
9. Conception
Mahiru, Itsuki’s cousin, informs him that she is pregnant on the day of his high school graduation. A gate of light appears, transporting the two into the world of Granvania. “Impurities” in this land have been causing a disturbance to the Stars, eventually plunging Granvania into chaos and disorder. And Itsuki, now revealed to be one of the “Star Maidens,” is regarded as Granvania’s last hope, and is tasked with producing “Star Children” and combating the “impurities.” Itsuki may never be able to return home unless the task is completed.
8. Dog Days
Dog Days takes place in the world of Flonyard, an alternate Earth populated by beings that look like humans but have animal ears and tails. The feline forces of the Galette Leo Knights have attacked the Republic of Biscotti, a union of dog-like citizens. In order to save Biscotti, Princess Millhiore summons a champion from another world to defend her people. Cinque Izumi, a regular junior high student on Earth, is that champion.
Cinque agrees to assist Biscotti and retrieves the Palladion, a sacred weapon, before preparing for war. Warfare in Flonyard is fought without casualties and is more akin to sporting events, with the goal of raising funds for the kingdoms that participate. Cinque is crowned Biscotti’s champion, but he soon discovers that a summoned champion cannot be returned to their home world. Biscotti’s scientists will work tirelessly to find a way for Cinque to return home, but in the meantime, he must fight as Biscotti’s hero to serve Princess Millhiore.
7. Tenchi Muyo! War on Geminar
Kenshi Masaki has been kidnapped and brought to Geminar by an unknown group. To return home, he agrees to assist them in assassinating the newly crowned empress of the Shtrayu Empire, Lashara Aasu XXVIII, with the help of a massive robot known as a Sacred Mechanoid.
Lashara notices Kenshi’s abilities and demands that her assailant be apprehended alive, only to find out that the pilot is male, which is extremely uncommon on Geminar. She hires Kenshi as her bodyguard because she believes killing him would be a waste of time.
As the empress’s new servant, Kenshi is assigned to accompany Lashara to the Holy Land, a training facility for Sacred Mechanoid pilots. His presence attracts attention, but Kenshi is unaware that something sinister is brewing within the academy, capable of bringing the entire world to war.
6. Harem in the Labyrinth of Another World
Michio Kaga, a high school student, tries to launch a strange online game he discovered one day while browsing the internet. Instead, he is transported to the game’s world and given special abilities as well as a powerful sword. He finds himself fighting bandits after gathering his thoughts and quickly realises that he cannot log out. Michio, accepting his fate and embarking on a journey to enjoy his new life, conquer dungeons for money, and build a harem to satisfy all his manly desires, sets out on a journey to enjoy his new life, conquer dungeons for money, and build a harem to satisfy all his manly desires.
5. The Familiar of Zero
Louise Françoise Le Blanc de La Vallière is a self-absorbed mage in a world of wands, cloaks, and royalty. Despite attending Tristain Academy, a prestigious school for magicians, Louise has a major issue: she is unable to cast magic properly, earning her the nickname “Louise the Zero” from her classmates.
When first-year students are required to perform a summoning ritual, Louise’s summoning causes a catastrophic explosion! When the smoke clears, a young man named Saito Hiraga appears. Louise’s companion, Saito, is now treated like a slave, forced to clean her clothes and eat from the ground. When an unknown brand is discovered etched on Saito’s hand as a result of the summoning ritual, it is believed to be the mark of a powerful familiar named Gandalfr.
The Familiar of Zero is a wild, adventurous, and explosive novel that follows Saito as he adjusts to his new life and Louise demonstrates that she is more than her nickname suggests.
4. Combatants will be Dispatched!
As a chief operative, Combat Agent 6 is assigned to assist the villainous Kisaragi Corporation in conquering the entire known universe. Agent 6’s arrogance grows as he is tasked with infiltrating Grace’s kingdom—a mission that could change the fate of the world. He is assigned to travel with Alice Kisaragi, an exceptional android with a youthful appearance named after the company itself, to ensure the mission’s success.
Alice and Agent 6 meet Snow, the commander of the country’s royal guard, on the outskirts of the kingdom. Agent 6 takes advantage of the opportunity for a long-awaited promotion at his company by changing the sacred ritual recitation to an embarrassing phrase, and Snow leads the pair to a broken legendary artefact. As a punishment, the princess of the kingdom elevates Him to the rank of honorary knight, completing a portion of his mission. Combat Agent 6 has infiltrated the kingdom’s inner circle and is now tasked with assisting his new employer in combating the Demon Lord’s Army while continuing to commit evil deeds as a Kisaragi Corporation combatant.
3. Arifureta: From Commonplace to World’s Strongest
When Hajime Nagumo and his classmates are summoned to a fantasy world and tasked with saving humanity, their ordinary lives are turned upside down. While his classmates have impressive combat skills, Hajime is mocked for gaining only a subpar transmutation skill with no offensive power.
During an expedition in the Great Orcus Labyrinth, Hajime is betrayed by one of his classmates, plunging him to the bottom of an abyss. Despite surviving the fall, Hajime is confronted with terrifying monsters and misfortunes that send him into a deep sleep. He decides to fight for his life, desperate to live and return home one day, only to meet Yue, an imprisoned vampire who is also attempting 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.
2. How NOT To Summon A Demon Lord
Nobody can match the power of the Demon King Diablo in the fantasy MMORPG Cross Reverie. He easily defeats anyone who dares to challenge him, as he possesses the game’s rarest artefacts and an unrivalled player level. Diablo’s true identity, despite his terrifying reputation, is Takuma Sakamoto, a reclusive gamer with no social skills. Takuma is obsessed with his virtual life, defeating hopeless challenges day after day—that is, until a summoning spell unexpectedly transports him to another world where he appears as Diablo!
Takuma is greeted by the two girls who summoned him in this new world that resembles his favourite game: Rem Galeu, a petite Pantherian adventurer, and Shera L. Greenwood, a busty Elf summoner. They perform an Enslavement Ritual in an attempt to subjugate him, but the spell backfires, and they become his slaves instead. As the situation becomes more awkward than ever, Takuma decides to accompany the girls in their search for a way to break their contract while learning to adapt to his new life as the menacing Demon King.
1. Mushoku Tensei: Jobless Reincarnation
Despite having been bullied, scorned, and oppressed his entire life, a 34-year-old shut-in summoned the courage to attempt something heroic—only to have it end tragically. In an unexpected turn of events, he awakens as Rudeus Greyrat in another world, resuming his life as a baby born to two loving parents.
Rudeus quickly adjusts to his new surroundings by recalling his previous life’s memories and knowledge. He begins to show magical talent that far exceeds all expectations, honing his craft with the help of a mage named Roxy Migurdia. Rudeus’ father, Paul, teaches him swordplay, and he meets Sylphiette, a young girl who quickly becomes his best friend.
As Rudeus begins his second chance at life, he strives to make the most of his newfound freedom while overcoming his traumatic past. And perhaps one day he’ll find what he couldn’t find in his previous life: love.
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