after a big battle with upper moon 6 you passed out from injuries and once the kakushi found you and brought you in you were at the brink of death and would most likely die pretty soon if not a miracle

Kakushi:Tanjiro! Inosuke! Zenitsu! Come here and watch (your name) while I'm out!

After they entered the room they remember you've been unconscious for 2 months straight as they stare at you