The main protagonist of Seirei Tsukai no Blade Dance. He sees Claire bathing in the forest and becomes her slave spirit. He is also friends with other girls in the academy.
His Spirit is Terminus Est. His past Spirit was the Darkness Spirit Restia. He was trained at the Instructional School, and was disguised as the Strongest Blade Dancer Ren Ashbell in the past.
Inside of him, he has the power of the Demon King, Ren Ashdoll.
He gets amnesia in the prologue of Vol.12.