Rusuhara Mao

The main character's younger sister, In other words, your sister. She is a brash and sassy girl who teases and makes fun of you, her older brother, at every opportunity. When she was a little girl, she used to follow you around, calling out your name.


She is a glutton when it comes to sweets, but all that fat goes to her breasts. She is short and petite for her age, but has big boobs that have grown to the point of being ill-suited for her frame. Her face is cute and innocent for her age. Her eyes are narrowed, and she has a sassy and confident look in them.

She wears her black hair in twin-tails. When she is summoned to another world as the Demon Queen, she grows horns, a tail, and bat-like wings. While she is the Demon Queen, she becomes the master of the demons and makes unreasonable demands on the countries where humans live, forcing them to make Japanese their official language and to offer sweets to her.

Although she is mischievous and thoughtless, she is not excessively vicious and does not take human lives. She hates to lose, and insists that she has not lost yet, even if her body has already given in to cock. But that is also in anticipation of even harder play. She has a tight pussy with a high body temperature and meaty folds with a strong grip.

Despite the fact that she is an impertinent girl with huge breasts who says all sorts of mean things to her older brother, she does all this due to her desire for her brother to cruelly dominate her and unveil her masochistic side.