I, who perceive myself as a woman, transcend parent-child boundaries and engage in cohabitation sex. (Morisawa Kana, DASS-443)

Kana's son came to Tokyo to pursue university studies, leaving his hometown. Kana, shocked by her husband's infidelity, left him and came to live with her son. Her son became aware of Kana's allure and, under the same roof, developed sexual desire for his mother.