Daisuke, a young man living in a single-parent household, harbored deep affection for his mother, Sumika. She was hardworking, always gentle and modest in demeanor. However, one day, a shocking truth came to light—Sumika had a sex friend. This revelation left Daisuke torn between his long-held feelings for his mother and this unsettling new reality. One quiet morning, as he observed the usual calm of the house, he noticed the veranda window open, with Sumika inside, wiping the floor. Yawning sleepily, he approached her. The incident only deepened his confusion, adding further weight to his already troubling concerns about his future.