Unexpected intercourse with creampie in torn trousers

The story starts with a guy coming home from work and finding his sister in the living room. Surprised by her sudden appearance, he quickly pulls out his dick to hide it from her view. However, she doesn't seem to mind and even starts to stroke it for him. After a brief moment of teasing, they both get naked and start fucking each other in various positions. From the missionary to the doggy style, they try everything to satisfy their lust. The guy even manages to rip his pants while fucking her, but he doesn't mind as he's too busy enjoying the creampie action. The girl moans loudly as she feels every inch of his hard cock deep inside her. In the end, he finishes by cumming inside her, which she happily receives.