Natsu, an honor student at a school in Tokyo, is a serious student with a strong sense of justice and belongs to the dance club. One day, "Natsu", who came to practice alone on the rooftop, witnesses "Suzuki", a delinquent student, smoking and warns him. Then, the teacher "Hito" also appears and praises "Natsu", but in fact, "Hito" was also a bad teacher ... During the summer vacation, an honor student with short black hair was demonized into a woman by a sweaty vaginal shot ring that was inevitable to be pregnant by lowly men.