I went into my Step-brother's room because I was hearing weird noises and he was watching porn on his VR device. He didn't realize that I was there so I could see that he was watching sibling porn and that the main character looked a lot like me! At first I was surprised. But I kept looking and I started getting horny. Especially when seeing how my Step-brother jerked off that nice cock of his. He had no idea I was there, till his VR devide went out off battery. Then it occurred to me to make his fantasy come true... And mine since I couldn't be more horny at that point.