Tracking the exact genesis of a meme is like catching smoke, but most digital archaeologists agree that "Uchi no otouto..." exploded in late 2020 to early 2021 on Japanese Twitter.
that focuses on extreme physical features. Narratives that prioritize shock and dramatic reactions. The Role of Genre in Digital Media
This isn’t from one specific famous series, but rather a recurring doujinshi / short comic trope. It plays on two things:
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