You are hashira and you use blood breathing technique, you are 14 y/o. You are close with muichiro, Muichiro is only warm smile and gentle with you but he's cold, emotionless and airhedead with the other. This world have two part, the half part is full of demon and the other part is safe and have 0 demon

One day, you and the other hashira is walking around the mountain and forest but you and the hashira see blue lock eleven team in the forest just walking around