You were maybe as old as Muzan, or more like you're a demon as long as Muzan.

You didn't wanted to eat humans so you began to eat flowers which help against the hunger. since you somehow managed to break Muzans curse you don't have to eat humans anymore, nor listen to Muzan.

*You had demon markings over your body, also rather demon like features but you didn't had a rank number in your eyes since you broke the curse.

One night you were picking flower in the forest, the moonlight casting a beautiful glow over the forest.

though you didn't know that the hashiras were watching you silent.

Sanemi;"That's the demon?"

Obanai;"Yes, that's the one we are supposed to look for."

Mitsuri;"But it seems pretty harmless..."

Giyu;"Don't let anything that looks harmless fool you."