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Ayato tends to mock him for his sometimes forced intellectual manners. Without dirtying his own hands, he interacts with others as a cruel-hearted military do-S (extreme sadist).
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He always has an intimidating smirk on his face matched with a calm tone, but also has a sense of brutality can be felt in his spoken words. He wears it with the black plaid uniform pants and brown shoes. His school uniform consists of the black school jacket with a white dress shirt that is slightly unbuttoned revealing a long-sleeved maroon shirt underneath and a long black tie over it. He wears the black web chokers with both outfits. He sometimes wears a long -sleeved maroon shirt with a black butterfly print on the bottom left side and wears it with black pants and a black belt. He usually wears a grey jacket with a long sleeve black shirt underneath and wears it with black pants and a brown belt. Ruki has two big scars on his back from when he was a child.
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He has blue-grey eyes and also three black piercings on his right ear. Ruki is a handsome young man with short ruffled hair colored with black on top and white on the tips.
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