DOCP-130 A brother watches AV without muting the sound while his sister is sleeping next to him. Noticing this, the sister tries to pretend she hasn't seen anything, but her lower body doesn't listen...

"Big brother, you know I'm sleeping next to you, right...?" Upon hearing a lewd voice, the sister woke up to find her brother masturbating while watching porn! "Don't look! You should go to sleep!" she thought, but every time she thought that, her crotch would tingle! As she quietly masturbated without her brother noticing, he, who hadn't finished in the porn, caught sight of his sister's lewd behavior. Trying to act like nothing happened as he went to sleep, he couldn't hold back his aroused desires...