Skip to content
ONIMAI: I'm Now Your Sister!

Anime · Manga · Hub · 1 Season

ONIMAI: I'm Now Your Sister!

お兄ちゃんはおしまい!1 Season

Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman!

About

About the story

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 …

The shelf

Shop

About

At a glance

ONIMAI: I'm Now Your Sister! is an anime series from 2023. Its original run is complete. The catalogue records 12 episodes. This Kaidomi hub connects 2 releases, 9 credited creators, 36 characters and 12 listed episodes.

Full synopsis

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!

Catalogue score — Kaidomi never shows its own rating until the fans build it. In its genre, only 541 of 2,305 scored titles rank higher — the top 24%.

Score
7.5 / 10
Episodes
12
Status
Finished Airing
Members
75,985
Studios
Studio Bind
Airing
5 Jan 2023 → 23 Mar 2023
Full synopsis

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!

Keep your place in the story

Log episodes and chapters, rate the title and build your fan profile in the app.

Explore the franchise

Anime and manga, side by side

2 of 2 connected titles

The people behind it

9 Artists
View all · +1 artists

The cast

36 characters
Mahiro OyamaMahiro OyamaMainMarika Kouno
Mihari OyamaMihari OyamaMainKaori Ishihara
BridgetBridgetSupporting
Kaede HozukiKaede HozukiSupportingHisako Kanemoto
Sol BadguySol BadguySupporting
Momiji HozukiMomiji HozukiSupportingMinami Tsuda
Asahi OukaAsahi OukaSupportingKana Yuuki
Miyo MurosakiMiyo MurosakiSupportingNatsumi Hioka
Ky KiskeKy KiskeSupporting
MayMaySupporting
View all · +26 the cast
  • Nemu FujimiSupporting · 2 titles
  • Axl LowSupporting · 1 titles
  • Nayuta TenkawaSupporting · 1 titles
  • Minato SenkawaSupporting · 2 titles
  • Yuriko KitaharaSupporting · 2 titles
  • Yuuta SakuradaSupporting · 2 titles
  • Chitose AzumaSupporting · 1 titles
  • Eroge OnseiSupporting · 1 titles
  • Nodoka FushimiSupporting · 2 titles
  • RaikaSupporting · 1 titles
  • Mari NishinomiyaSupporting · 2 titles
  • Miyako NagaseSupporting · 2 titles
  • Rin MinakataSupporting · 2 titles
  • Mai YasakaSupporting · 2 titles
  • Minori ShiinaSupporting · 2 titles
  • Satsuki TakadaSupporting · 2 titles
  • Tomoya KibaSupporting · 1 titles
  • AnnouncerSupporting · 1 titles
  • Aoi TachikawaSupporting · 1 titles
  • Eiga NarrationSupporting · 2 titles
  • Makoto KodairaSupporting · 1 titles
  • SemeSupporting · 1 titles
  • Takeshi HaijimaSupporting · 1 titles
  • Tenin BSupporting · 1 titles
  • UkeSupporting · 1 titles
  • Yuuya OukaSupporting · 1 titles
Kaidomi

Kaidomi Otaku

Make more of your fandom

Stand out. Support the community.

  • Preview
    Otaku profileYour ring and badge, wherever your public profile appears.
  • Support KaidomiHelp build and maintain the app and community.

No free trial · Auto-renews · Cancel from Kaidomi Settings