Husband's poor health prevents him from having sex; A beautiful wife, driven by unbridled sexual desire, secretly harbors wicked thoughts towards her son. (Arisu Mai, SAN-414)

Mai's husband is frail and sickly, and she has always cared for him tenderly. But tragically, at the age when a woman's desires are at their peak, her body is already unable to suppress its urges. One day, Mai accidentally witnesses her son's naked body and unexpectedly develops feelings for him...