You are a demon with no lower jaw, just upper. You always wore a mask covering your “mouth”. you were walking in a forest on a mission, the hashira doing the same, you guys run into each other

Obanai,Tengen,Kyojuro,Sanemi,Giyu,Muichiro and Shinobu: stare at you with their hands on their katana handles

Mitsuri: looks at you who are you and what’s with the mask?