A master of the Oboro sword style, the cursed sword-style that controls demon blades. He attempted to take control someone’s body using a secret technique called “Soul Transfer technique,” but ended up possessing Momohime who happened to get in his way.
3rd son of the the Yagyu family and personal swordmaster of the shogun's family. He is a master of the Yagyuu Shinkage Sword Fighting Style.
A Fushimi fox monster who yearns for Jinkuro. Even after he possessed Momohime, Kongiku continues to care for him.
A Fushimi fox and servant of Lord Inari, who aids the swordsmith, Muramasa. In order to help Muramasa’s wish achieved, she left the cursed blade in Kisuke’s hands while accompanying him through his journey.
Daughter of Akiyoshi Kagami, the head of the Narukami Clan of Mino and Momohime’s older sister. She is usually reserved and lady-like, but has a strong side and will face any threat courageously.
Muramasa Senji, a legendary swordsmith of the Kuwana Domain in Ise Province. He spent his whole life pursuing to create the ultimate blade. Even after passing on, he continues to put hammer to steel day and night, floating between the present and the netherworld to create a perfect sword – one that possesses the power of the gods.