Cover of ONIMAI: I'm Now Your Sister!

English releases on file: Aug 31, 2021 – Nov 10, 2026.

ONIMAI: I'm Now Your Sister!

11 volumes

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

Volumes
11 in the canonical sequence
English packaging
11 books, 11 releases
Publishers
Kodansha

Reading path

Kodansha · 11 books in reading order

Cover of ONIMAI: I'm Now Your Sister! Vol 1
Vol. 1
Aug 31, 2021Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 2
Vol. 2
Oct 5, 2021Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 3
Vol. 3
Nov 30, 2021Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 4
Vol. 4
Jan 25, 2022Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 5
Vol. 5
Mar 22, 2022Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 6
Vol. 6
Oct 25, 2022Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 7
Vol. 7
Jul 25, 2023Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 8
Vol. 8
Jun 18, 2024Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 9
Vol. 9
Apr 22, 2025Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 10
Vol. 10
Jan 27, 2026Digital
Cover of ONIMAI: I'm Now Your Sister! Vol 11
Vol. 11
Nov 10, 2026Digital

A missing volume, a wrong date, a duplicate series, or a series we should add? Tell us in the MangaDB Discord. It has channels for bug reports, suggestions and series requests, and you can attach screenshots or photos of your books.

Report on Discord
History