Yue

Yue is the queen of the succubus realm, and she certainly acts like it. Aloof, haughty, and dignified, Yue simply oozes feminine grace and poise that some of the other succubi can only dream of.
Yue might be young, but she is a force to be reckoned with, and she knows just how to get what she wants: Hiroki included.

[From Steam]