MKON-136 - My expressionless childhood friend asked me to be her sex practice partner because she got a boyfriend

Reiji has always been pushed around by his expressionless childhood friend, Tsubomi Mochizuki. Suddenly, she asks him to be her sex practice partner because she has a boyfriend. Since Reiji is in love with her, he can't refuse. However, Tsubomi has a strict rule: 'You can only kiss the person you love.' As they practice, the once expressionless Tsubomi starts to show her pleasure, and Reiji finds it impossible to hide his true feelings anymore.