START-373 | While my wife and son were visiting their parents' house, I had a secret rendezvous with the beautiful teacher at my son's nursery school and we had a crazy affair for a week. Hikari Aozora

Hikari, the son's homeroom teacher, is popular with the children. However, while the father's wife and son are visiting home, Hikari and the father end up having an affair. They start meeting regularly at his home, and before they know it, they're spending their days having sex. The day before his wife and son are due to return home, Hikari does something surprising...