For "family get-togethers," the open-air bath is the place to be. You can talk about things you normally wouldn't talk about. A big-breasted sister shows her younger sister how to give a blowjob, and a father and sisters gently give their virgin brother a sex education. There are also parents and children who beg for a younger brother and try it on the spot. Since they're naked, they can say anything, and in the open-air bath, they open Kokoro and bodies, and the family has a friendly incestuous experience!