Ani - Imo
Manga
Ani-Imo is a Japanese manga series written and illustrated by Haruko Kurumatani. Ani-Imo centers around Youta and his twin sister Hikaru. They are unrelated by blood and switch bodies with each other through an accident. Youta finds that the little sister which he thought he knew turns out to be very different. Hikaru, now in Youta's body, announces she has always had feelings towards her brother as more than a brother and intends to make him hers.
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