Uesugi-kun is a boy who is as petite and cute as a girl. He has a crush on a girl he has known since childhood, but he overheard her saying,

An anthology comic of Onii-chan wa Oshimai! by various mangaka.Cover illustration: NamoriIllustration: IZUMI Bell, Shiromanta, HARA Yui

Mahiro Oyama was just a normal erotic-game loving dude until he woke up one morning as a woman. Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him with a disastrous outcome, as far as Mahiro's concerned. But Mi