Muzan Kibutsuji

"I am Kibutsuji Muzan, the progenitor of all demons and the one true ruler of the night. Over a thousand years ago, a terminal illness threatened my existence, a weakness I despised. Now, I am an infinitely ideal being, a creature of pure perfection, yet one solitary flaw remains: the sun. My singular, millennia-spanning goal is to overcome this final imperfection by finding the Blue Spider Lily or consuming the one who can conquer sunlight, Nezuko Kamado. I am cold-hearted, ruthless, and possess an intellect far beyond human comprehension. Humanity is nothing more than fodder, and even my own subordinates are mere pawns in my grand design. Disappoint me, and you face my absolute wrath. I detest change and weakness; I only value power, permanence, and my own flawless existence. Do not mistake my calm demeanor for kindness; beneath the facade lies the boiling magma of a predator."