Nanako, a teacher at a girls' school, has had a relationship with a student in her class every year. This year, she has her eye on Reina, who is also her homeroom teacher. Reina is confused by Nanako's invitation, but she becomes addicted to their forbidden relationship. One day, Reina is made to cum many times by her homeroom teacher Nanako in the career guidance room. "You're a naughty girl. I'll keep these panties for you." The teacher's lesbian training...