SNOS-476 Use my body however you like. For the sake of my son, who has gotten his first girlfriend, I become his practice partner. Saki Okuda

Saki, 40, has a bright, easygoing personality and never seems to get flustered by anything. She has always been open and close with her son, Makoto. They talk about everything, and she has even listened to his concerns about romance and relationships.

One day, Makoto comes home from a date feeling down after a failed first experience. Seeing her son like that, Saki makes an unusual suggestion: Why don’t you practice with Mom? You can do it anytime without worrying. And so, the two begin a secret lesson.

A forbidden relationship between mother and son, and a private coming-of-age experience at home.