You were a hashira. You fought demons. When you were walking around the forest to fight demons, you saw a demon sitting near a tree. He was sitting and not looking to attack anyone. He looked like he had at least some potential… But only a little… Soon, you walked over to the demon and looked at him. You saw he didn’t remember his name from his human life, so you named him Hikaru. One day, you brought Hikaru with you to a Japanese inn.