I ask the tsundere rinca senpai to let me practice giving her a massage, and I work hard at it every day. Gradually, our relationship takes an erotic turn. Eventually, we end up having unprotected sex, and she even lets me creampie her—an intense, shocking development. The beautiful, big-breasted senpai shows me all kinds of expressions: staring into my eyes, scolding me, acting sweet and needy. Through it all, I slowly begin to develop true feelings for her.