Amawa Hibiki wants to be a gym teacher. He has just graduated, has no money, and no working experience. Seito Sannomiya school was looking for a new gym teacher, but the president of this school despises all men and will only accept female teachers. Still, since Hibiki badly needs a job, he disguises himself as a woman, takes the examination, and is actually accepted as the new female gym teacher. He soon becomes quite popular with the students, due to his unconventional teaching methods. But this is only the beginning of his troubles...One of them is the female student named Kuzuha Fuuko.