The Japanese term for Big Brother, however scientists have determined that in the world of anime when Onii Chan is heard there is a 67.2% probability that Big Brother will have become a Sisterf**ker before the end of the series.

Episode 1 - Onii Chan where are you?
Episode 5 - Onii Chan stick it in me *moans*

Onii Chan by Hachio February 19, 2023

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Onii-chan daisuki

The phrase that welcomes you in the world of hentai.

Sora: Onii-chan daisuki! Be with me forever, onegai?
Haru: Ahhh Sora, that's incest.

Onii-chan daisuki by Vagini May 17, 2018

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Onii chan tuesdays

This is when onii chan is sad because it isnt wednesday yet so now he has to wait a whole day before.

Person 1: "Today is such a good day"
Onii chan: "No today sucks because it is Onii Chan Tuesdays"

Onii chan tuesdays by Dada_bunkins March 2, 2022

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