Mei Hayashi is a mixed returnee schoolgirl, the most popular girl in school. The narrator is the typical uncle teacher students call old man. He never thought the school’s favorite would like him and come close on her own. After school, Christmas, graduation… He swore he would never touch a student, but her distance is too near and reason fails. She says she fell for him and they cannot go back. For a year and a half they sink into secret sex, guilt and erection fighting each other.