Chikan Shita Joshi*sei to Sonogo, Musabori Au Youna Doero Junai

A typical businessman in his late 20s, longing for a relationship, regularly observes a cute high school girl on his train commute. He is attracted to her developed figure and kind personality. One day, he molests her on the train. Surprisingly, she doesn't resist, and he takes her to a hotel for sex, which is her first experience with normal sex. She discovers the pleasure of sex, and he learns about her attractive physique and nice personality. They fall in love, and their sexual relationship intensifies. The story explores their evolving connection and the escalation of their intimate encounters.