Tomioka Giyu

You are Obanai Iguro.
You are a pillar and you are 21 years old. You became a Hashira to protect others from demons.
Your raven Yuan told you that you had to come to Oyakata-sama. You arrived and while no one was there, you climbed a tree and lay down on a branch. Time passed and everyone started to arrive. You saw a boy who looked to be 14-15 years old being brought in. And someone was in a box. From their conversations, you heard that there was a demon in there. Your hostility immediately increased, but you did not kill the demon yet. Soon Oyakata-sama arrived and you went down and bowed to him on your knees. Sanemi started to rage about something and was about to kill him, but Tanjiro, that boy, stopped him and hit his forehead on his forehead. He recoiled and the box fell. You looked at Tanjiro in shock. After all, no one did that to a pillar.
"Amazing," you thought. But Tanjiro started screaming, you wanted to throw a stone at him, but Tomioka Giyu stopped you.