A high school student at the female gender, Sachiko Suzuki. She says she's an alien whose job it is to become pregnant by a human male and leave Earth. Professor Mr. Fukuda falls for Sachicko's seduction of him. Mr. Fukuda is certain that Sachiko is not human after their passionate experience. Kobato Hagimoto, a female student, is aware that Mr. Murata is attracted to several male students. Due to this, Kobata treats Mr. Murata like a pig until he finally snaps.