Completed
“Naoki, a masturbation-addicted teen, is summoned to a fantasy world to empower three heroines with his semen against the Demon King.”
Isekai Harem Monogatari
異世界ハーレム物語
7.44
27,931 viewers · 329 favorites
Fantasy
Hentai
Harem
Isekai
Would You Love or Hate This?
AI-powered analysis tailored to your taste
Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
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Synopsis
Naoki, a masturbation-addicted teen, is summoned to a fantasy world to empower three heroines with his semen against the Demon King.
A 16-year-old named Naoki Oikawa is addicted to masturbating. One day, while pleasuring himself as usual, his erotic magazine begins to glow and Naoki suddenly finds himself in a fantastic world. He appears among three female adventurers who later present themselves as the swordswoman Filia Shiora, the priestess Tiane Rutheim, and the elf Llusse. They explain to Naoki that the world is in danger of destruction due to the resurrection of the Demon King, and the only way to save it is for him to use his special power—feeding his semen to the three girls so as to increase their strength exponentially. Of course, the young hero agrees to join the party, and his erotic quest begins.
What people say
Community consensus
Derived from 7 sampled reviews
8.0
/10
What 7 viewers settled on.
100%
recommend
Score distribution
median 8
mode 8
σ 1.51
Agreement
Mostly aligned
σ 1.51 · some divergence
The polarity gap
—
Not enough recommend signal yet
Score over time
↑ 0.00
Running avg · Nov 2020 → May 2023
Snap verdicts
· shortest highly-rated reviews
- 8 “I absolutely loved the characters, the concept, and the perfection of the art and character designs. However, the sound quality was occasionally funky, and I felt there were significant missed...”
- 10 “The animation quality is exceptional, consistently outperforming the mainstream industry, and the characters—especially Mila—are portrayed with perfect expressions. While the plot follows a typical...”
- 8 “This is genuinely good stuff that captures a great "another world" feel, and I was dying with the approach of the MC in the first episode. While the story relies on tired tropes like the "semen...”
Verbosity
Short · 57%
Medium · 29%
Long · 14%
Watch Order & Related
A self-contained story.
No sequels, spin-offs or alternate tellings — Isekai Harem Monogatari begins and ends here.
Cast
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A Ova Production
Majin.- Format 4 × 16′ eps × min
- Total runtime 1h 04m all episodes
- Aired Jul 2020 – Dec 2020
- Source Ova media type
- Rated Rx Hentai
- Ref. BS-16413 catalog