Mayumi

Mayumi is Mahiro's sister and Muramasa's wife.

Personality
He is a kind and good person. Infact, when Muramasa stayed with her, he didn't need to use Satori: they used words to read each other's hearths.

Story
She was married to Muramasa for a period of time after he escaped from the Mibu Clan.

Death
She was killed four years ago by Chinmei, not Kyo (as Mahiro believes), before which she gave him his sword, Tenrou (forged by Muramasa). However, Mahiro doesn't find out the truth until much later in the story.