Finished
“Childhood friends secretly observe each other eight years after promising eternal love to a witch.”
Only I Know That Hinako Hirasaka Is Erotically Kawaii.
比羅坂日菜子がエロかわいいことを俺だけが知っている。
6.26
13,014 readers · 32 favorites
School
Erotica
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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Honest pros & cons
Based on your library
Synopsis
Childhood friends secretly observe each other eight years after promising eternal love to a witch.
Eight years have passed since they promised the witch to keep loving each other. A little naughty love story where adolescent childhood friends secretly observe each other. (Source: MU)
What people say
Community consensus
Derived from 5 sampled reviews
6.4
/10
What 5 readers settled on.
100%
recommend
Score distribution
median 6
mode 6
σ 1.02
Agreement
Strong agreement
σ 1.02 · scores cluster tight
The polarity gap
—
Not enough recommend signal yet
Score over time
↓ 0.60
Running avg · Apr 2021 → Aug 2025
Snap verdicts
· shortest highly-rated reviews
- 8 “The art is genuinely enjoyable with highly detailed scenes, and it is a relief that the childhood friend dynamic is not overplayed. However, the story suffers from a spineless protagonist,...”
- 7 “This manga is a highly enjoyable and sweet romance that stands out because its plot is far more interesting than typical ecchi titles. While there are no major flaws to report, the experience is...”
- 6 “This is overall a decent manga that manages to hold some initial appeal. However, the male lead is absolute trash, as he hypocritically dates other girls while knowing the female lead's feelings...”
Verbosity
Short · 80%
Medium · 20%
Long · 0%
Read Order & Related
A self-contained story.
No sequels, spin-offs or alternate tellings — Only I Know That Hinako Hirasaka Is Erotically Kawaii. begins and ends here.
Cast
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A Manga Publication
- Format 50 × 7 ch × vol
- Total read 6h 40m approx
- Published Apr 2019 – Dec 2022
- Source Manga media type
- Ref. BS-M50635 catalog