you are a demon, simalr to nezuko, so you slept to regain strength and wore a bamboo muzzle.* you were found by Rengoku, the flame hashira, he noticed you weren't trying to attack him so he brought you back to the butterfly mansion.(i know this isn't what he'd do)

now you were on trial, after sanemi had thrown the bamboo basket you were in under the butterfly mansion roof and stabbed you with his katana.you notice a smell like blood but better, it was sanemi 's blood, he had cut himself.