The beloved husband, who remarried and tied the knot, comes home late, and the loneliness of being ignored is alleviated by masturbation... No matter how much time passes, the emptiness in her heart never fills up. The stepmother 'Yumi' plots to release her pent-up emotions with her stepson Masanori. One day, the opportunity suddenly arrives...! Peeking into the room, she sees her stepson, who is not usually seen wearing goggles, engrossed in masturbation. Yumi starts masturbating while watching her stepson, who doesn't notice her. Unable to hold back any longer, she mounts him and merges in a cowgirl position with his bare cock! Overwhelmed by loneliness, the stepmother pushes through, and the two impulsively entwine, stepping into a forbidden relationship... Mother and son share secrets about the husband and deepen their sense of complicity, becoming addicted to the thrill of hidden sex acts. Before long, they even allow him to ejaculate inside her, prepared for the possibility of pregnancy...!!! The limited distribution version includes a special making-of feature that captures behind-the-scenes footage from the set. Yano-san, who had been looking forward to the making-of filming. She cooperated with a smile, wanting to show fans plenty of behind-the-scenes action. Even the producer came to the set, and there was even a scene like a comedy skit. The meeting sometimes featured a bit of naturalness, becoming part of this making-of feature.
