FJIN-158 My friend's sister is a big-assed gal who's arrogant and slutty, but she's just a piece of shit.

She deliberately turned her butt towards me and pretended to be showing off! Swaying! My friend's gal sister is provoking me with her defenseless big butt, so I can't stop getting an erection! If you can't resist and try your hand at it... it will turn out to be a surprising twist!