Reiji's father. Sousei was once an immortal Mahoutsukai who had eternal youth. However, he has lost his ability to become immortal and ageless, and has retired from the battlefield. With his wife, Sakura, Sousei is currently living and working in the orphange, "The Saint's Admonition", where Reiji grew up in. Because he has a vast amount of battle experience than Reiji, Sousei is calmly watching over his son as a father. [Translated from Getchu]