Character profile
Mutsue Yasuri
鑢六枝Biography
Mutsue Yasuri is Shichika and Nanami's father and the previous master of Kyotouryuu.
Story spoilers
He died a year before the story's events, and his death is revealed to have been caused by Shichika, who killed him to protect Nanami when Mutsue was about to kill her out of sympathy for her condition.
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