Kunagi Tenrou

Kunagi Tenrou is Rouga's childhood friend and fiance. As a child she was extremely ill, and her brother Kamui attempted to cure her. In the process, he accidentally unsealed the Demonic Boundary Hole, turning Kunagi into a half-demon and giving her powers she could barely control.

Profile
Rouga's fiancé. A half demon and half human. She became a half demon she made contact with the demon boundary hole in the past. She has known Rouga since their childhood. She was struck in her wolf form which assumed her unable to control her powers very well until she finally returned back to her normal self however her appearance became a young girl-like for unknown reasons. She is the fastest fighter than others as she said. She have a brother, Kamui (in BBA)

Personality
She is kind of serious and almost emotionless, curiosity and towards to Rouga is pretty cruel but very supportive. Gou and she knows the secret of the past which Rouga don't know.