In her single-minded desire to raise her son Ryota into a successful man like his father, Reiko had raised him strictly. However, Ryota was going nowhere in life, and on top of that, she hadn't been intimate with her husband in ages, causing stress and sexual frustration to build up. One day, while secretly reading an erotic book from Ryota's room, the pent-up desire exploded... Just then, Ryota's best friend Atsushi happened to visit and caught a glimpse of her lewd state. Reacting to the buildup, Reiko didn't scold him but instead instinctively started playing with his dick...
