Kamiyama Fubuki

Ryuu's younger sister.
She is a friendly girl with a somewhat devilish air about her. She
is quick to make sarcastic remarks, but in fact, she loves her brother and is always worried about him.
The two sisters attend the same academy.
When she finds out what Ryu is doing, she is upset and confronts him but ends up being violated by him instead.
Having always liked her brother, Fubuki makes up her mind and decides to cooperate.