Hitomi's mother is concerned about the recent declining birthrate problem. She tells her son Makoto, "The declining birthrate problem is serious now, isn't it? The world is becoming full of old people, and the economy is not running smoothly." She turns to sex education and becomes an evangelist who teaches what sex is... Makoto, who is a virgin, and Jiro, who lives next door, surrender to Hitomi's kind but strict sex education guidance. [※There are some disturbances in the image and sound]
