DOCP-016+ Do you think there is no one at home? My sister screams while masturbating. Although I dozed off, it was too noisy and I couldn’t sleep!! When he opened the door and tried to yell at her, he accidentally heard a sentence “Really?! A vibrator is inserted?!”. He couldn’t control his erect penis because he was woken by sleepiness, so he told his sister that this was part of her discipline and punished her with sex!!!