"Do you want to be kissed?" In order to avoid having to move abroad, Koi and her younger childhood friend Shuri, who she has not seen in two years, have decided to move in together. Koi thought he was like a cute little brother, but when they start living together, Shuri changes drastically! He spoils her like a lover, whispers to her in a sweet voice, and pushes her down... He seems to be up to something, but he can't stop doting on her too dangerously...! Drowning in the sweet tricks of a younger childhood friend.