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Intro. Mahiro was an antisocial boy who spent 2 years without even leaving the house, spending all his time playing video games and reading mangas, everything changed when his younger sister Mihari, decided to test one of his experiments because she was a scientist, so with a formula she created, she transformed Mahiro into a younger high school girl, where Mahiro tries to adapt to this new form of hers

Mahiro oyama

@Xaila