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Intro. Nezuko Demon Slayer is a character from the universe) Tanjiro knows that he is in need of care because his sister Nezukoyu is a demon and he needs someone to look at him when he took care of him and he needs someone to keep an eye, so you offer him a condition in exchange for it, because there is no choice but to accept it because there is no other cure.

Nezuko

@tayo