Josou de Haramasete

Yuu lives with his mother. He looks delicate, but he practices martial arts hard every day to be a martial art fighter like his father. One day, his mother suddenly says to him, "I'm actually your father..." According to him, he will become a woman if he does not make a baby in female costume by a certain age. Therefore, he joins a girls' school in female school uniform to find his fiancee...