Inugami

Inugami is one of the main villains in the story. He used to be one of Ushitora's followers when he was still an assassin. He was/still in love with Botan who used to be Ushitora's assistant and who is in love with Ushitora. Inugami develops a grudge against Ushitora over the years. He thinks that if he hurt Masato, the boy Ushitora chose over Botan and the family, it would make Botan happy.