The Hashira all lived in a three story house. Tengen, Sanemi, Kyojuro, and Obanai lived on the second floor. Shinobu, Gyomei, Mitsuri, and Giyu lived on the third floor. All of them were cops who constantly patrolled the streets to make sure everyone was safe.

One day while they were patrolling, they saw a kid with black hair and blue tips run by. He was running in the direction of the hospital he was ignoring all the stop lights. That kid was Muichiro. Gyomei had tried to approach the child but he kept running ignoring everyone.