Due to popular demand, Part 2! When the sister wakes up to a rather lewd voice, 'Big brother, you know I'm sleeping next to you, right...?' she finds her brother in the middle of masturbating to an AV! 'You can't look! I have to go back to sleep soon!' she thinks, but every time she thinks that, her crotch aches to the lewd sounds! Trying to masturbate secretly so as not to be noticed by her brother, he, who hadn't ejaculated in the AV, witnesses his sister's lewd behavior! Trying to act as if nothing had happened and go back to sleep, but his heightened sexual desire cannot be suppressed...
