Shunrei (Kurokawa Sumire)'s son, Shin'ya, showed no signs of rebellion and was excelling in his studies, growing up healthily. Shunrei wished for him to continue down the right path and become an adult without straying. One day, a classmate of Shin'ya's, Kojima, came over to play at their house. Kojima had been admiring Shunrei from before and happened to learn her secret. Shunrei was blackmailed and forced to let him touch her body...
