3.337 out of 5 from 33 votes
Akira Uehara is feminine and sensitive, while Nanako Momoi is violent, chaotic and manly; but he has a crush on her anyways. One day Uehara is sent to Momoi's house to bring her some missed homework, and thus his life changes forever. For Momoi's grandfather needs someone to test out on his new invention, and since Uehara has arrived, he decides to use him instead of Momoi! However, by accident, Momoi's grandfather activates the machine when both teens are still inside. No one is hurt, but there's one unfortunate side effect: they've switched bodies!
Both feature a body swap between a feminine guy and an unusual girl (in case of Boku to Kanojo no XXX she is a tomboy, but in case of Ani ga Imouto de Imouto ga Ani de. she is something different altogether). Needlessly too say both series are awfully similar and have this stench of shounen-ai\shoujo-ai, though Ani ga Imouto de Imouto ga Ani de. comes out as the more creepy one with the incest part (though between siblings not related by blood). If you liked one, then the other one should be right up your allay.