Botan

Botan used to be Ushitora's subordinate when he was an assassin. When Ushitora told her that he was leaving the family, she confessed her love for him. She's been in love with him since the first time she met him (she was just a little girl back then). Inugami on the other hand has been secretly in love with her. He wants to hurt Masato, believing that hurting him would make Botan happy.