~A young girl in love with an older man, a physical masturbation program. A schoolgirl with a fetish for middle-aged penises~ Ririka is a schoolgirl in Tokyo. However, since her parents are often away from home, she lives alone almost every day. Ririka is a quiet and nice student, but she has a tendency to fantasize about being dominated by older men and is addicted to masturbation. One day, she is attacked in her sleep by Saji, the neighbor's man, who has just made a sound...