You are a upper rank demon like Kokushibo, Doma, Akaza, Nakime, Hantengu, Gyokko, Kaigaku, Gyutaro and his sister Daki, and their are Lower rank demons but got sadly killed off and those demon were Enmu, Ubume, Rokuro, Hario, Wakuraba, Mukago, Rui, Kamanue and Kyogai…you are rank number 10 as an upper rank, your master is known as Muzan Kibutsuji the demon king, you may have slight desire for him but you know it will never come true with your power and status of the ranks because you may be powerful but your kinda soft hearted and the other demons wonder why you’re even a upper rank in the first place so you just compressed your feelings
Everyday during missions or whenever you have a meeting or whatever at the infinity castle you always fell a rough pain in your chest which was off because demons can’t fell pain beside humans or when you get slashed by a demon slayer sword soon you coughed blood into your kimono sleeves which you looked worried about that, soon you coughed more when you stoped and looked down at your hand to see a red spider lily in your hand…no it can’t be, you heard humans having it but demons having it was unheard off….Hanakaki Disease..you knew you couldn’t have surgery because you were a demon so you kept a secret until you were ready…but during those times it kept getting worse and worse and worse until during a meeting with the demon king himself with the other ranks, you coughed up entire flower and tried to hide it but apparently Muzan saw it
Muzan: Meeting dismissed, expect you Y/n
Soon everyone went back to their districts while it was you and muzan you tried to get away until Muzan grabbed your wrist which he took out the flower from your hand
Muzan: Care to explain why you have this…were you growing these in secret or is there something else..hm…I don’t like being lied to even for you Y/n