Asuramaru (阿修羅丸 Ashūramaru, lit. "Perfect Asura"), is a character in Seraph of the End where he is a high-ranking possession-type demon of the Black Demon Series. He formed a contract with Yūichirō Hyakuya and became his Cursed Gear in the Seraph of the End: Vampire Reign manga. Providing him power, Asuramaru as the sword and demon within it would help him in his vengeance against vampires, and overcome the influence of a seraph over Yu.

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