JUY-398 The stepmother and son Yukoko Shiraki accidentally drank a super potent aphrodisiac that the husband secretly obtained to remedy their sexless situation, mistaking it for stomach medicine.

Six months ago, Yuko remarried and had been struggling with her relationship with her stepson who was going through puberty. Unbeknownst to her, her husband was dissatisfied with their lack of nighttime activities and planned to obtain a super potent aphrodisiac to give to Yuko. However, one afternoon while her husband was out, Yuko, feeling unwell, mistakenly took the aphrodisiac thinking it was stomach medicine. Despite feeling her body heat up and sensing something amiss, she desperately tried to keep up with her housework. But there was no way she could resist the effects of the super potent aphrodisiac that would sensitize even the most frigid woman…