Megumi Amatsuka is a young boy. One day he picked up an old book but there was a demon living in the book. The demon said that he can grant one of Megumi's wish. Megumi always wanted to be a tough man so he makes his wish. Unfortunately the demon was a wicked one and he magically turned Megumi into a cute looking girl. Megumi grew up as a girl, boyish but pretty girl, and now she is going to be a highschool student.