Satsuki, who had been living alone for a long time, started living with her daughter and son-in-law. The daughter and son-in-law had intense nightly activities. Satsuki was curious and couldn't help but peek. At the son-in-law's hip movements, her body became hot and her crotch became wet. One day, after the daughter went out, Satsuki finds her son-in-law napping in the living room. Remembering the daughter and son-in-law's nightly activities she had seen before, she involuntarily reaches for her crotch. The son-in-law wakes up, but Satsuki is so engrossed in masturbation that she doesn't notice. Satsuki snaps to attention at the son-in-law's voice and stops, hiding her body. After a silence, Satsuki pleads, "Just once, please hold me."