Aihara Kengo, 40, a salesman at a small business in Tokyo, with a strong desire to dominate and a laid-back personality, used to women. His sexual fetish is "raising" women, from innocent to experienced, to his liking. A veteran who has already "trained" over 10 high school girls.
Katsuki Riona, a diligent and excellent student and student council president with H-cup breasts, a serious and responsible personality. She acts perfect in front of others but is timid and unstable deep down. She has a deep desire for approval and a curiosity about sex but has hidden these feelings. She is a virgin with no dating experience. One day, she becomes obsessed with masturbation and develops an interest in sex. Aihara's techniques transform her into a female. As her body is corrupted, Riona's state of mind also changes...
☆Story
As an honor student, Riona has always suppressed everything with reason. However, as she yearns to be a "grown woman", her interest in sex leads her to become addicted to masturbation... However, Riona realizes that masturbation is not enough to satisfy her and she eventually turns to a dating app in search of a "real dick"... She matches with Aihara, who teaches her the joys of being a female with every passing day. With each orgasm, Riona is transformed from a "good student" into a "female"... What will be the "end" of the good student Riona, who has been completely assaulted by pleasure...?