Loading…

Your premium destination for discovering and streaming the latest movies and TV shows in stunning quality.

Action
Comedy
Drama
Sci-Fi
Horror

Home
Explore
Movies
TV Shows
Pricing
Blog

Help Center
Terms of Service
Privacy Policy
About Us
Contact Us

© 2026 Cinevo. All rights reserved.

All systems operational

We value your privacy

We use cookies and ads to keep CinEvo free. You can accept or decline personalized ads.

Home Explore Movies TV Shows Pricing Blog AI Picks

ONIMAI: I'm Now Your Sister!

ONIMAI: I'm Now Your Sister!

7.4(71)

2023

Ended

ja

Animation Comedy

Overview

When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.

Release Date

January 5, 2023

Seasons

1

Episodes

12

Production

Studio Bind, EGG FIRM

Watch Now

Share

Cast

6 people

Marika Kouno

Marika Kouno

Marika Kouno

Mahiro Oyama (voice)

Acting

Kaori Ishihara

Kaori Ishihara

Kaori Ishihara

Mihari Oyama (voice)

Acting

Hisako Kanemoto

Hisako Kanemoto

Hisako Kanemoto

Kaede Hozuki (voice)

Acting

Minami Tsuda

Minami Tsuda

Minami Tsuda

Momiji Hozuki (voice)

Acting

Kana Yuuki

Kana Yuuki

Kana Yuuki

Asahi Ohka (voice)

Acting

Natsumi Hioka

Natsumi Hioka

Natsumi Hioka

Miyo Murosaki (voice)

Acting

Episodes

12 total

Season 112 episodes2023

No episodes available for this season.

Reviews & Ratings

(4)

3.7

4 community reviews

5★

1

4★

3

3★

0

2★

0

1★

0

Sign in to leave a review

Recommended For You

Butt Detective2018

Butt Detective (2018) poster

Butt Detective

2018

The Dangers in My Heart2023

The Dangers in My Heart (2023) poster

The Dangers in My Heart

2023

Maid Sama! (2010) poster

Maid Sama!

2010

Food Wars! Shokugeki no Soma2015

Food Wars! Shokugeki no Soma (2015) poster

Food Wars! Shokugeki no Soma

2015

Seton Academy: Join the Pack!2020

Seton Academy: Join the Pack! (2020) poster

Seton Academy: Join the Pack!

2020

Himouto! Umaru-chan2015

Himouto! Umaru-chan (2015) poster

Himouto! Umaru-chan

2015

Yamada-kun and the Seven Witches2015

Yamada-kun and the Seven Witches (2015) poster

Yamada-kun and the Seven Witches

2015

Gleipnir (2020) poster

Gleipnir

2020

Alya Sometimes Hides Her Feelings in Russian2024

Alya Sometimes Hides Her Feelings in Russian (2024) poster

Alya Sometimes Hides Her Feelings in Russian

2024

Pseudo Harem2024

Pseudo Harem (2024) poster

Pseudo Harem

2024

Digimon: Digital Monsters1999

Digimon: Digital Monsters (1999) poster

Digimon: Digital Monsters

1999

Daily Lives of High School Boys2012

Daily Lives of High School Boys (2012) poster

Daily Lives of High School Boys

2012

The Disappearance of Nagato Yuki-chan2015

The Disappearance of Nagato Yuki-chan (2015) poster

The Disappearance of Nagato Yuki-chan

2015

Ultimate Otaku Teacher2015

Ultimate Otaku Teacher (2015) poster

Ultimate Otaku Teacher

2015

Triage X (2015) poster

Triage X

2015

Buddy Daddies2023

Buddy Daddies (2023) poster

Buddy Daddies

2023

Seraph of the End2015

Seraph of the End (2015) poster

Seraph of the End

2015

Non Non Biyori2013

Non Non Biyori (2013) poster

Non Non Biyori

2013

Hana-Kimi (2026) poster

Hana-Kimi

2026

Shikimori's Not Just a Cutie2022

Shikimori's Not Just a Cutie (2022) poster

Shikimori's Not Just a Cutie

2022

Maison Ikkoku1986

Maison Ikkoku (1986) poster

Maison Ikkoku

1986

Wasteful Days of High School Girls2019

Wasteful Days of High School Girls (2019) poster

Wasteful Days of High School Girls

2019

School Rumble2004

School Rumble (2004) poster

School Rumble

2004

LUPIN ZERO (2022) poster

LUPIN ZERO

2022

My Friend's Little Sister Has It In for Me!2025

My Friend's Little Sister Has It In for Me! (2025) poster

My Friend's Little Sister Has It In for Me!

2025

Aesthetica of a Rogue Hero2012

Aesthetica of a Rogue Hero (2012) poster

Aesthetica of a Rogue Hero

2012

Urusei Yatsura2022

Urusei Yatsura (2022) poster

Urusei Yatsura

2022

Night Wizard the Animation2007

Night Wizard the Animation (2007) poster

Night Wizard the Animation

2007

The Kawai Complex Guide to Manors and Hostel Behavior2014

The Kawai Complex Guide to Manors and Hostel Behavior (2014) poster

The Kawai Complex Guide to Manors and Hostel Behavior

2014

SUPER HxEROS2020

SUPER HxEROS (2020) poster

SUPER HxEROS

2020

Kinmoza! (2013) poster

Kinmoza!

2013

HYPNOSISMIC -Division Rap Battle- Rhyme Anima2020

HYPNOSISMIC -Division Rap Battle- Rhyme Anima (2020) poster

HYPNOSISMIC -Division Rap Battle- Rhyme Anima

2020

Miru Tights2019

Miru Tights (2019) poster

Miru Tights

2019

When Will Ayumu Make His Move?2022

When Will Ayumu Make His Move? (2022) poster

When Will Ayumu Make His Move?

2022

Summoning a BL Fan to Another World: Mini Anime2020

Summoning a BL Fan to Another World: Mini Anime (2020) poster

Summoning a BL Fan to Another World: Mini Anime

2020

True Cooking Master Boy2019

True Cooking Master Boy (2019) poster

True Cooking Master Boy

2019

Maria the Virgin Witch2015

Maria the Virgin Witch (2015) poster

Maria the Virgin Witch

2015

Julie the Wild Rose1979

Julie the Wild Rose (1979) poster

Julie the Wild Rose

1979

FLAGLIA: Story of Summer Vacation2023

FLAGLIA: Story of Summer Vacation (2023) poster

FLAGLIA: Story of Summer Vacation

2023