Megumi-chan is a teen-aged girl with a secret past. She used to be a boy until she saved a magician from a gang of boys and was given a magical book. As a boy when he bled into the book a genie appeared to grant one wish. Megumi wished to be a man, but the genie granted the wish backwards so he turned into Megumi-kun, a girl. Years pass and Megumi grows up to be the most beautiful of girls but still acts and fights like the boy that she really is. Upon entering High School she immediately beats up the school bully who falls in love with her. Thus begins her adventures looking for that book to change her back and fighting off both admirers and her on-coming femininity. 天使肚子痛。恋爱喜剧。 天使惠（林原惠美 配音）本是铮铮男儿，可六岁那一年，在阴差阳错之下，他打开了一本魔法书，并被书中的恶魔变成了女孩，不仅如此，恶魔还消除了所有认识天使惠的人的记忆，这样即便天使惠喊破喉咙，也没有人相信他的男儿身。 就这样，顶着一副所有女人都会心生羡慕的美丽面庞的天使惠渐渐长大，并且升入了高中，学校里出了名的不良少年苏我源造（高木渉 配音）第一面就深深的爱上了天使惠，对她展开了热烈的追求，但天使惠居然以拳脚回应。天使惠的内心里只有一个愿望，那就是找到那本失落的魔法书，找回自己的男儿身。
