Eykha

Eykha (エィハ, Eiha) is Ibuki's Guardian and a Bounded One.

Plot
Eiha met Mashiro when she first joined the Revolutionary Army, during which they become friends. She develops strong feelings of loyalty and the feeling of duty which is of protecting Ibuki. The monster she is bound to is Val, who she is able to command at her will. She will be sacrificed by Ibuki but later reborn as last of the dragon shrine maiden as the red dragon make a promises with Ibuki to give all Val's remaining life to Eiha.