The Kamishima family was in a gloomy mood after losing their husband. However, their daughter began dating Mitsuko's nephew, and thanks to him, their home life was returning to its former cheerfulness. Mitsuko was relieved that her daughter and nephew's relationship seemed to be going well, but she accidentally witnessed their lovemaking. Though she knew she shouldn't look, her lower body began to ache and she couldn't help but slip her fingers in. After a while, her nephew seemed depressed after failing at work. Mitsuko embraced her nephew, trying to comfort and support him. However, her nephew grabbed Mitsuko's hand and slowly moved down to his lower body. Mitsuko was surprised by his crotch, which had become large and hard, but since her daughter wasn't around, she accepted him...