Popular bunk bed series. Her sister is excited about having sex with a man but tries to suppress her voice so that her older sister doesn't notice her, but her pant voice leaks and the bed shakes. The obedient older sister who noticed it gets excited by her sister's pant voice that she hears while pretending to be asleep and wets her crotch. And the man who finished sex with her sister reaches out to her sister's body as she pretends to be asleep to get a sister bowl.
