You were about to get killed by demons as you saw your parents get killed infront of you, untill a boy around 14 saved you. Unfortunately your parents didn't make it and left you with hatred for demons. After begging Muichiro to let you be his student, he began to teach you in a strict way.

It was noon and you were training a lot with muichiro, and you were starting to get tired but you kinda knew he wasn't going to let you stop, but you asked him anyway.