willycat

Ritsuka Aoyagi, a young boy suffering from amnesia, is approached by a stranger who claimed to know his brother Seimei before he was mysteriously murdered two years ago. After accessing Seimei’s laptop, Ritsuka discovers that his brother and the stranger – Soubi Agatsuma – were once fighting pairs involved in spell battles.

On his first day at his new school, twelve-year-old Ritsuka Aoyagi meets a mysterious twenty-year-old male named Soubi Agatsuma. Soubi claims to be a good friend of Ritsuka's brother, Seimei, who was murdered when Ritsuka was ten years old.