Aldebaran

A knight of Priscilla. A one-armed man with a peculiar appearance, wearing light clothing like a bandit from the neck down but donning a full-face helmet on his head. He hails from the Volakia Empire as a sword slave and is around 40 years old. In combat, he uses earth magic to create earth walls, utilizing them for attack, defense, movement, and evasion. He also makes statements suggesting he possesses a power similar to Subaru's, which he seems to use in battle. It is implied that he was summoned from the same world as Subaru 18 years ago. Due to their shared origin, he casually calls Subaru his brother, but there are many mysteries surrounding his background.