I live with my girlfriend in Tokyo. During the winter break, her younger sister Hikari, who is a student, came to stay at our place. One day, I encountered Hikari's unguarded and bra-less figure. Since we hadn't had sex in a while, I couldn't calm down my erection and tried to grope her breasts and attack her, but instead, I was seduced by Hikari, leading us to repeat the act of internal ejaculation.
