Summary

  • 2.5 Dimensional Seduction, inspired by a manga series, follows a high school otaku's funny escapades with girls.
  • Love Hina tells the story of a man's journey to fulfill his dreams amidst unexpected circumstances.
  • Saekano dives into the world of otaku culture as a young man pursues his creative aspirations.

Inspired by Yu Hashimoto's eponymous Japanese manga series, 2.5 Dimensional Seduction (also known as 2.5-jigen no Ririsa) is a harem anime. The hilarious series follows a second-year high school student named Masamune Okumura whose traumatic past experiences with women have turned him into an obsessive otaku who can't help but daydream about his favorite manga character, Lilliel.

The-18-Best-Harem-Manga-With-No-Anime-Adaptations
The 35 Best Harem Manga With No Anime Adaptations

There have been plenty of great harem anime over the years, but these fantastic harem manga have yet to receive adaptations.

Interestingly, Masamune detests being in the company of a real girl and, as the president and only member of the school's manga club, loves to spend time on his own. But when Ririsa Amano, a first-year student who is also a fan of Lilliel and loves to cosplay her, shows interest in joining the club, Okumura cannot say no to her. Although he feels that he has finally found the perfect otaku buddy, things get complicated as more girls join the club. The hilarious story of a hopeless otaku and his strange life is an entertaining watch. For those who wish to stream something similar, there are many great harem anime like 2.5 Dimensional Seduction that are certain to impress.

5 Love Hina

A Fun Harem Series With A Heartwarming Touch

Two characters in Love Hina
Love Hina
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Release Date
April 19, 2000

Ken Akamatsu's Love Hina is a coming-of-age story of a young man who dares to chase his dreams and finds himself along the way. When Keitaro Urashima was young, he decided that he would one day attend Tokyo University and made a promise to a friend that the two of them would reunite there. In the following years as they drifted apart, Urashima forgot the girl's name, but he remained adamant about his educational ambitions. When he failed twice to make it to Tokyo University, his parents decided to stop supporting him, and he was forced to move to his grandmother's hotel, unbeknownst to the fact that it had been turned into a female-only dormitory.

In a strange turn of events, Keitaro ended up becoming the manager of the dormitory, which tied his fate with the five girls already living there. As he became engrossed in his preparations for the entrance exams, Urashima's eyes kept looking for the girl he once made a promise to.

4 Saekano: How To Raise A Boring Girlfriend

A Harem Anime That Revolves Around Creative Aspirations Of An Otaku

A group of charcters looking at a computer in Saekano How to Raise a Boring Girlfriend image
Saekano: How to Raise a Boring Girlfriend
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Release Date
January 9, 2015
Studio
A-1 Pictures
Creator
Fumiaki Maruto

Tomoya Aki is a lifelong otaku who has been obsessed with light novels and anime from a young age. Over the years, he has found himself emotionally attached to various characters and stories that have deeply influenced him. Determined to use the experiences as inspiration, he now wishes to share his love for the art form by creating a game.

15-Best-English-Dub-Harem-Anime,-Ranked
15 Best English Dub Harem Anime, Ranked

Despite featuring the raunchy side of anime, several harem series offer exceptional English dubs, with some even surpassing their subbed counterparts.

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Saekano: How to Raise a Boring Girlfriend (also known as Saenai Heroine no Sodatekata) follows Tomoya as he recruits friends for his ambitious mission, not knowing that the project will forever transform him and those associated with it for the better. The comedy series is deeply influenced by the otaku culture and centers around popular culture themes such as harem, just like 2.5 Dimensional Seduction.

3 The World God Only Knows

Follows A Hopeless Otaku Who Sets Out To Conquer His Fears

keima katsuragi from The World God Only Knows
The World God Only Knows
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Harem
Comedy
Supernatural
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Release Date
October 6, 2010
Seasons
3
Creator
Tamiki Wakaki

Keima Katsuragi is an obsessive gamer who is an expert in dating sim games and is famous online as the God of Conquest for his superior courtship talent in the two-dimensional world. His overindulgence in galge games has turned him into a hopeless otaku with no interest in the real world. His ordinary life appears to be spiraling towards an aimless existence revolving around dating games until a demon named Elucia "Elsie" de Lute Ima recognizes his unique talent.

Elucia is in desperate need of help to retrieve evil spirits that have run away to the human world, and she decides to enlist Keima for her daunting mission. Although Katsuragi arrogantly accepts her deceptive offer, he soon finds out that he will have to win the hearts of three-dimensional girls to help Elucia. With no going back, Keima sets out to conquer his hatred for wooing girls in the real world, unaware of the far-reaching consequences his decision is going to lead to. The World God Only Knows (also known as Kami nomi zo Shiru Sekai) is a hilarious harem series with an otaku theme, which fans of 2.5 Dimensional Seduction are certain to enjoy.

2 We Never Learn: BOKUBEN

A Hilarious Story Of A Meritorious Student Turned Tutor

A group of characters posing in We Never Learn Bokuben
We Never Learn: Bokuben
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Creator
Taishi Tsutsui

We Never Learn: BOKUBEN is a comedy harem anime like 2.5 Dimensional Seduction that focuses on similar themes and weaves a captivating story. The anime follows an impecunious third-year high school student named Nariyuki Yuiga, who desperately wants to change his family's fortunes and help them escape the vicious cycle of poverty. Luckily, his school offers the VIP nomination to meritorious students that could help him pay for his college education. However, the recipient of the renowned scholarship must fulfill one obligation - help the school's most promising students in their weakest subjects.

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The 35 Best Harem Manga With No Anime Adaptations

There have been plenty of great harem anime over the years, but these fantastic harem manga have yet to receive adaptations.

When Nariyuki is selected for the VIP nomination, he is also entrusted with the responsibility of teaching Fumino Furuhashi, Uruka Takemoto, and Rizu Ogata. As he gets to know his eccentric tutees, Yuiga realizes that his experiences with them will be life-changing. We Never Learn: BOKUBEN (also known as Bokutachi wa Benkyou ga Dekinai) recounts the mirthful and sometimes heartwarming tale of Nariyuki standing up for his dreams while helping his mentees find success even when they have conflicting ambitions.

1 Monster Musume: Everyday Life With Monster Girls

Story Of A Loner Who Suddenly Finds Himself Surrounded By Monster Girls

Suu in Monster Musume
Monster Musume: Everyday Life With Monster Girls
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Release Date
July 8, 2015
Studio
Lerche

Kimihito Kurusu is an ordinary man in his twenties who has led an isolated life ever since his parents moved abroad. In the alternate world that he inhabits, Japan has become the first country to allow human and non-human species integration. This has caused a radical shift in Kimihito's life as he is entrusted with the responsibility to look after a Lamia named Miia. Although she alone challenges Kimihito, things take a chaotic turn as she also attracts girls of other breeds.

Kimihito, who has been a loner most of his life, suddenly finds himself the focus of girls from various breeds seeking his romantic affection and validation. But Kurusu must be careful, as the Interspecies Exchange Act outlaws carnal relationships between species. Monster Musume: Everyday Life with Monster Girls follows Kimihito who unexpectedly gets bombarded by female attention like Masamune from 2.5 Dimensional Seduction. Both characters mature with their new experiences and learn how to be themselves around girls.

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2-5-dimensional-seduction.jpg
2.5 Dimensional Seduction
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Release Date
July 5, 2024
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Studio
J.C.Staff
Creator
Yu Hashimoto