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Season 1
12 Episodes
Episode 1
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Mahiro's Confusing New Body
Episode 2
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Mahiro's Time of the Month
Episode 3
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Mahiro's Close Encounter
Episode 4
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Mahiro's New Friend
Episode 5
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Mahiro Discovers Adventure and Social Gatherings
Episode 6
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Mahiro Goes Back to Middle School
Episode 7
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Mahiro's Role-Playing Game
Episode 8
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Mahiro's First Girls Sleepover
Episode 9
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Mahiro Rings in the New Year
Episode 10
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Mahiro Ponders Boobs and Identity
Episode 11
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Mahiro Pretties Up
Episode 12
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Mahiro's Future as a Sister
ONIMAI: I'm Now Your Sister!
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.
slice of life
middle school
based on manga
junior high school
school life
+8 more
Last Updated: 8 days ago
![Promotional Video [Subtitled]](https://img.youtube.com/vi/pvnrSpb109U/maxresdefault.jpg)
![Official Trailer [Subtitled]](https://img.youtube.com/vi/DxlzZgMeNr4/maxresdefault.jpg)
Promotional Video [Subtitled]
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![Promotional Video [Subtitled]](https://img.youtube.com/vi/pvnrSpb109U/sddefault.jpg)
Promotional Video [Subtitled]
0 viewsJanuary 3, 2023
![Official Trailer [Subtitled]](https://img.youtube.com/vi/DxlzZgMeNr4/sddefault.jpg)
Official Trailer [Subtitled]
0 viewsDecember 14, 2022
Opening | Identeitei Meltdown - Enako feat. P Maru-sama
0 viewsJanuary 11, 2023
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