MKON-123 My emotionless, cool childhood friend asked me to help her practice sex with her boyfriend... Himeno Ran

Yuta has always been at the mercy of his childhood friend, Himeno Ran, who has no expression and whose thoughts are hard to discern. Suddenly, she asks him to be her sex practice partner since she has a boyfriend. Yuta, who likes Ran, has no reason to refuse and agrees to practice sex with her. However, he has a personal rule that "you should only kiss people you like," and she won't let him kiss her. Although she has always had no expression, Ran gradually begins to feel pleasure and shows erotic voices and expressions, and Yuta can no longer hide his feelings...!