MKON-123 - I was asked by a cool, expressionless childhood friend to "help me practice sex because I got a boyfriend"... Himeno Ran

Yuuta has always been led around by his childhood friend 'Himeno Ran,' who is expressionless and hard to read. He is suddenly asked to "be my sex practice partner because I got a boyfriend." Yuuta, who likes Ran, agrees to practice sex without hesitation. However, he has a personal rule that "you shouldn't kiss anyone but someone you love," and he won't allow kissing. While remaining expressionless, Ran gradually begins to experience pleasure and shows erotic voices and expressions, and Yuuta can no longer hide his feelings...!