Ever since my father went on a business trip half a year ago, my stepmother (Akari) seemed lonely. To distract herself from the loneliness, she would do housework until she was drenched in sweat… I (Yuichi), her son, was worried about her. But one day, I accidentally caught her having phone sex with a man other than my father! Seeing my stepmother's lewd appearance and sultry voice, I felt more excitement than anger. Unable to control my desire in front of my stepmother's sweaty body…
