Muto Yumi

Muto Yumi is a member of the Tribe. She works as a maid in the household of the exiled nobleman Lord Fujiwara and reports back to the Muto family on his activities. During her captivity as Fujiwara's wife, Shirakawa Kaede recognizes her as Muto due to her resemblance to Muto Shizuka, her former maid; Yumi and her other maid, Kumiko, admire and pity Kaede for her circumstances.

After the Muto family swears allegiance to Otori Takeo, Yumi takes the opportunity to speak with Kaede in private when Ono Reiko (a relative of Fujiwara's ex-wife, placed in Kaede's household to keep an eye on her) is severely ill. She confides in Kaede that Shizuka is present in the area, and that Takeo has surrendered to Arai Daiichi and made an alliance with him against the rest of the Otori. Although Takeo is publicly considering a marriage with Shirakawa Hana (Kaede's youngest sister, who Daiichi holds as a hostage) Yumi reassures Kaede that he loves her and will come for her as soon as he can.

Unfortunately, after Reiko recovers from her illness she becomes suspicious that Yumi has passed information on to Kaede, and informs Lord Fujiwara. A few days later, when Yumi is sent to fetch wood, she does not return; Fujiwara had her seized and interrogated. Presumably under torture (since she died during the interrogation) Yumi reveals to him that she brought Kaede a message from Takeo. Her death is ultimately avenged when Fujiwara is killed during a subsequent earthquake.