Rankeo manga № 661
ONIMAI: I'm Now Your Sister!
Manga · 2018
7.59/ 10 · from 3 sources
Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out! (Source: Kodansha USA) Note: Includes 57 extra chapters.
Why this rank?
Every source below feeds the aggregate, weighted by votes and reliability — see the full methodology. No black box.
| Source | Score | Normalized | Votes | Rank there | Updated |
|---|---|---|---|---|---|
| AniList | 77 | 7.70 | 13,989 | #1015 | 7/8/2026 |
| MyAnimeList | 7.87 | 7.87 | 8,122 | #1225 | 7/9/2026 |
| Kitsu | 78.42 | 7.84 | 1,863 | #1019 | 7/9/2026 |
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