My Cute Expressionless Lover

My Cute Expressionless Lover summary:

By chance, Izumi ends up going out with Kurosaki, the classmate he had a secret crush on. However, his dull and expressionless face makes it hard for him to express his happiness. They're having s** for the first time, but Izumi feels nervous. "Whoa!!!" His sensitive body reacts to Kurosaki rubbing his nipples lightly! "So you can make such a se** face too." Izumi's melting expression that he doesn't usually show to anybody and his exposed, embarrassed body are subjected to Kurosaki's tormenting caresses... "But I actually know... that this is nothing more than a 'game' to Kurosaki..."