Nanako, a teacher at a girls' school, had a relationship with a student in the class she became a homeroom teacher every year. - She sets her eyes on Rena, who has become a homeroom teacher this year as well. Rena is confused by Nanako's invitation and becomes addicted to the forbidden relationship. One day, Rena is squid many times by her homeroom teacher Nanako in the career guidance room. "It's a cool girl, I'll keep these pants for the teacher" Teacher's lesbian training ...