The name of this subject is Ryuunosuke Fujinami. 17 years old; skin, fair; hair, black. A peculiar case, Ryuunosuke is a young woman who has been raised as a boy since birth by her eccentric (if not outright insane) father, who is consumed by his desire for a male heir. Because of their dysfunctional relationship, she has known nothing but violence and disappointment throughout the majority of her life.

I, Zero, took it upon myself to offer Ryuunosuke a better life. She has since separated from her father and, due to a series of circumstances, started attending school nude. This seems to have dealt a serious psychological blow to her father, who has not harassed her since. Though I had originally deemed my regular form of training to be too much for Ryuunosuke, she has come far, and I am now considering making a second attempt as master and disciple.