Haji haha no gofujô: Sore o gaman dekinai

Original title: 恥母の御不浄 それを我慢できない

Minako, who has maintained her chastity since her husband's death, indulges in masturbation in the bathroom to quell the throbbing in her lower body. Meanwhile, her stepson, Kazumi, secretly films her with a hidden camera…