Now that I'm an adult, I want to forget everything and go back to being a child. It seems that there is a "mature kindergarten" that meets the earnest desires of such a segment of society. “Bab-chan, have you gone out yet? It's great, it's great.” A kind and exemplary teacher, Kana-sensei, pampers you with childish words and a disgusting body. “Today it's time to exercise for a healthy penis.”