Voyeuristic discovery of stepsister's intimate moment

After a long day at work, our protagonist decided to sneak a peek into his stepsister's room. He had a feeling that she was up to something, and he was right. As he quietly opened the door, he spotted his stepsister, Pillada, in the throes of pleasure, her shaved pussy glistening under the dim light. She was completely oblivious to his presence, lost in the ecstasy of her own touch. He couldn't help but watch as she pleasured herself, her fingers dancing over her sensitive flesh, her body writhing in pleasure. He was torn between the desire to interrupt her and the fear of getting caught. But as he watched her reach her climax, he knew he had to do something. He stepped forward, taking her in his arms, and they began to explore each other in a way they never had before. The taboo nature of their encounter only added to their arousal, and they lost themselves in the heat of the moment.