[Warabino Matsuri] Sassy-Sister Complex! 4.0 (COMIC ExE 25) [Full Color] [Revelations72]

A devoted big brother trades his Sunday off to tutor Miki after her disastrous mock exam, only to find his selfish little sister sprawled asleep on the couch, a sleeping princess full of openings. Unable to resist the pull of her huge breasts and tanlined body barely covered by her sweater and stockings, he helps himself to her dozing form, losing control as her unconscious moans milk him toward a finish he can't hold back. But Miki was awake the whole time, and now his awful big brother owes her cake, weekly study sessions, and one more round to keep her satisfied.