[MKON-136]

Asked by my expressionless but cute childhood friend, "I got a boyfriend, so I want you to help me practice sex" - Tsubomi Mochizuki

Reiji has always been pushed around by his childhood friend Tsubomi Mochizuki. One day, she suddenly asks him, "I got a boyfriend, so I want you to be my sex practice partner." Reiji, who has feelings for Tsubomi, has no reason to refuse and starts the practice. However, Tsubomi has her own rule: "I can only kiss someone I love," so she won't let him kiss her. Tsubomi, who usually shows no expression and is hard to read, gradually learns pleasure and begins to show erotic moans and expressions. Seeing this, Reiji can no longer hide his emotions.