MKON-136 My cute, expressionless childhood friend asked me, "I have a boyfriend now, so I'd like you to help me practice sex." - Mochizuki Tsubomi

Reiji has always been at the mercy of his childhood friend, Mochizuki Tsubomi, who is expressionless and whose thoughts are hard to decipher. Suddenly, she asks him to be her sex practice partner because she has a boyfriend. Reiji, who has feelings for Tsubomi, has no reason to refuse and agrees to practice sex with her. However, she has a personal rule that "you can only kiss someone you love," and won't let him kiss her. Although she has remained expressionless until now, as Tsubomi gradually experiences pleasure and shows him erotic sounds and expressions, Reiji can no longer hide his feelings...!