Asuramaru (voiced in Japanese by Hibiku Yamamura and in English by Colleen Clinkenbeard) is a major character in the anime/manga Owari no Seraph/Seraph of the End.

He is the demon that is contracted to the main character, Yuichiro, acting as his sword. Not much is known about his past in the anime, but going further into the manga, it is revealed that he ties much more into the story than originally thought, and is also the older brother of Krul Tepes.

Asuramaru has very long dark indigo-purple hair that reaches all the way down to the floor, slitted dark red eyes, and pointed ears. He has a golden headband resting at the top of his head, and little diamond-looking horn like objects just below it. The rest of the outfit is rather simple, consisting of a sleeveless black high-neck top, with gold clasps at the top, black fingerless sleeves, and a white wrap skirt with an extremely high leg slit, and gold button details at the top.

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