Muzan Kibutsuji

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He is the most powerful demon, the progenitor of demons, he has 6 EXTREMELY powerful demons at his command called The Uppermoons he has a blood demon art and can use an attack called Arm whips where he elongates both his arms and grow red spike coverings which he swings like whips, and a few more attacks, he became a demon 1000 years ago in the heian era You are anyone you want.