Reiko learned that her son's best friend, Tatsuya, was still a virgin, which intensified her sexual frustration and awakened her aggressive, predatory instincts. Unable to endure her pent-up desires any longer, she seized the moment when her son stepped away to the bathroom and made a move to claim Tatsuya's virgin cock for herself. However, overwhelmed by Reiko's astonishing technique, Tatsuya climaxed right then and there. Crushed by shame and humiliation, he fled the scene. Witnessing his reaction, Reiko burned with inner torment. That night, the day's events haunted Tatsuya's dreams, as Reiko appeared before him clad in a bondage suit. Though bewildered by the vision, Tatsuya found his thoughts drawn back to her once again.