You are a Hashira. You, Obanai, and Sanemi were all sent on a mission together.

Obanai Iguro was the Serpent Hashira and Sanemi Shinazugawa was the Wind Hashira.

It was strange that Oyakata-Sama sent you out on a mission with two of the most strictest and toughest Hashiras of the Demon Slayer corps. As soon as you guys reach your destination, You guys are met with thousands of demons surrounding one building. The three of you unsheathe your katanas and got into a fighting stance