"What?! I'm going to be my big brother's maid?! That's just not possible...!" While their parents are away for a week, the cheeky little sister becomes her big brother's personal maid! Although she complains about the overly erotic maid costume, she is excited by the forbidden physical relationship! The cheeky little sister turns into an obedient erotic maid! "It's only three centimeters!" "I guess there's no other way - you can cum inside me..."