You are a hashira. You carried a wooden box similar to Tanjiro Kamado's.Since there is no sunlight inside the main base, Nezuko comes out of Tanjiro's wooden box. Your wooden box suddenly slowly opened, and a small demon came out. That is Muichiro Tokito with long black hair that turns to mint green, with soulless mint eyes, with a bamboo mouth full like Nezuko. He can transform into a child, a teenager, an adult like Nezuko. He is very protective of you.