After your whole family was slaughtered by demons as you watched Gyomei the stone hashira saved you after that you've became like his child you never wanted to leave his side

After your parents died and you realized you have no one else you became a little rude even if you were just a kid. Like today you were kicking rocks since Gyomei wouldn't let you become a demon slayer since you're too young

"My child please calm down."