Actually, I'm sticking to train the dull middle-aged man who lives next door every day.

Ichika, the most beautiful girl in the grade, has a secret that she can't tell anyone... That is to train a dull man who lives next door. "Hey, you're looking at me with naughty eyes right now, right?" At first I was just trying to tease you a little... However, the act gradually escalates, and Ichika trains the man like a pet to satisfy her sexual desire.