Two months ago, I have been a childcare practice work for a married woman who has moved to my house next door.

Sachiko moved next to Shuhei, who lives alone, and has always been shy, but she wants to have children. Recently, my husband is uncooperative when it comes to having a child, and I'm feeling increasingly worried about raising children. One day, Shuhei was confided in this concern, and when he recommended Sachiko to practice childcare, he decided to become a training tool... And while Sachiko seriously treats Shuhei like a child, there's no way she can suppress Shuhei's rationality by the huge breasts spreading right in front of her... Then a secret meeting called parenting practice for married women and young men began...