A middle-aged male teacher who comes to a home visit to "Riho" who withdraws without going to school for several months. At first, he was worried and asked about his worries instead of his parents, but gradually the emotions of the male grew and he couldn't control his reason and had a physical relationship several times. The teacher, who was single and had no female relationship for a long time, twisted the big cock that did not heal in estrus into the upper and lower mouths of Riho.