Hump Bang! 1 - Busty hentai schoolgirl goes from friend to lusty sex partner

Kouji declares that childhood friend equals freebie sex! I thought everyone knew that! Hiro says that they've only known each other for two years. Kouji tells Hiro that he heard her masturbating last night. His unassailable logic is that it's inefficient to masturbate separately. She's reluctant at first but soon becomes Kouji's willing sex adventurer.