Birthday: July 7, 2004
Height: 155 cm (5'1")
Race: Human
Affiliation: Japanese Imperial Demon Army
Section: Moon Demon Squad
Demon Weapon Series: Dakini
Demon: Tenjiryū

A member of the Japanese Imperial Demon Army and a member of Yuu's team of the Moon Demon Squad. She also the younger sister of Aoi Sanguu.

Mitsuba is shown to be a serious and by-the-book soldier, who dislikes those who break the formation and commit to individual action. In reality, she is a talkative, selfish girl. Despite this, she gets jealous easily. Mitsuba appears to be the most talkative girl in her group.