STARS-381 "Can I practice a little with my mouth?" The days when the younger brother, who had his first girlfriend, underwent intense training to improve premature ejaculation through fellatio and sucking. Mahiro Yuino

Film Introduction

My little brother seems to have a girlfriend recently. I never thought there would be a girl who likes him, that unassuming guy... It's infuriating how lovey-dovey they are, with this overwhelming aura of happiness. I only started out wanting to tease him... But somewhere along the way, things turned into some weird relationship... Never thought it would come to this.