Mito Mitsukuni

Background
For an unknown reason Mito had been sleeping in a ruin in Zettsu Earldom.

Appearance
Mito has black hair. She's self-proclaimed to be eternally 20 years old which might might have something to do with the reason she was sleeping in a ruin.

Zettsu Earldom
Mito becomes acquainted with John Smith after he discovered her lying asleep in a ruin in Zettsu Earldom. She becomes acquainted with Zena's squad through him when she helps them by single-handedly repulsing--or rather taming--the dragon that they and a Shiga Eight Sword couldn't fight off.

Trivia

 * Mito is a master of force magic (also known in some translations as nature magic).
 * Mito is the creator of Yamato Stone.
 * Mito, like Yuika, is one of the few people able to see Satou's status all to varying degrees.