Black Doggy House Master (ブラックドギーハウスマスター, Burakku Dogī Hausumasutā?) is one of the teachers of Boarding School Juliet series. His real name is currently unknown.
He wears a black suit, white shirt and a blue tie. He appears not to have any pupils.
He is shy when speaking in public and often speaks in an indistinguishable voice. However, he will speak clearly when insulting the White Cats House Mistress.
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