Nagatsuki Kuron

A mysterious kid from China who claims to be the rightful child of Mutsuki. She first appears in Happy Lesson Advance. She is very well versed in Kung Fu, and contends with Chitose at every chance possible. Despite that fact that she is first introduced wearing a red China dress, she prefers to dress like a boy. Not only that, but she apparently enough, is a huge fan of Hazuki Yazakura.