As her daughter's pregnancy progressed and her belly grew larger each day, Mai Ko Kashiwa found herself torn between concern for her daughter's health and a growing excitement for the arrival of her new grandchild. One evening, while her son-in-law was drinking alone, she decided to join him for a drink. They laughed and chatted, but when he made a teasing comment, she couldn't help but find him charming and playfully mocked him in return. He then joked, "If you keep acting so sexy, I might take you seriously. I haven't been with my wife since she got pregnant—I'm really pent up. If you're serious..." His words sent her heart racing uncontrollably. One day, while her daughter was out for a prenatal checkup, Mai Ko bid her farewell. As she turned around, she locked eyes with her son-in-law. She quickly looked away, flustered, but he stepped closer, placing a hand on her shoulder. Though confused and hesitant, when he pulled her into an embrace, her resistance melted away—leading her down a path where she would ultimately cross the line with her own son-in-law.