NATR-507 Shouta's Warped Sex Education Shouta Chisato Kouzuki Mari

One night, a couple's intimate act is witnessed by their son and daughter. Then, from the daughter Mari's single line, "Dad, does sex feel good?", the twisted sex education of the Shoda family begins. In the bathroom, they teach fellatio, and in the children's room, the mother teaches the son, and the father teaches the daughter individually. Then, under the watchful eyes of their parents, the siblings practice what they've learned…