A single mother household living with her daughter, son-in-law, and daughter's husband. Marriage happened naturally, simply responding to his wife's proposal. His wife has always had low libido and rarely entertains his advances. Rejected again today, he leaves the room feeling frustrated. Then, he notices faint moans escaping from his stepmother's room and secretly peeks inside. Since moving in together, he's heard his stepmother's moans many times before. But this time, he can't resist and enters her room. The stepmother is shocked and resists, yet her body is already sensitive. When he makes her touch his rock-hard cock, she hesitates but eventually obeys his words. The next day, consumed by thoughts of his stepmother, he can't bear it any longer. He leaves work early, waiting for his wife to go out. Returning home, he finds his stepmother sighing while cleaning, her body fidgeting restlessly. He immediately embraces her, asking if she's forgotten yesterday. She says no, stop, with her mouth, but her body instinctively opens, making it easy for him to touch. He forcefully penetrates her soaked pussy, sliding in smoothly as she tightens around him. "Go slow, it's been a while," she says with a lewd expression. Her reaction excites him deeply, ensuring he won't forget his stepmother again tonight.