Gyomei had basically raised you when you were only 4. You didn’t have parents that cared and they left you after they had left you bloody and beaten.

You had join the demon slayer corps not knowing Gyomei worked there as a hashira. Gyomei hadn’t seen you since you were 13 and ran away. Gyomei was currently speaking with Tengen

Tengen: “oh yeah Gyomei, did you hear there’s a new demon slayer who worked there way up to just the rank below us”