Uma

Uma is the younger sister of Usagi. She was born in the Year of the Fire Horse, thus gaining her unique fire powers and incredible horse speed.

Uma lived around Goldentusk with Usagi and Tora, who happened to be a very loyal friend to them, concealing the existence of her zodiac powers. However, she accidentally unveiled her powers after trying to free Jago from his cage, Usagi unintentionally abandoned her during the chaos that followed, leaving her vulnerable to the Guard.

Feeling betrayed by her sister, Uma was captured and taken to Dragon Academy with Jago and Tora, living there for several months and being recruited as a Dragonstriker while enjoying the luxuries of the palace. There, she almost met several other cadets, including Goru and Rana, two cadets who later played major roles in Treasures of the Twelve. When Usagi finally turned up a Dragon Academy months later, she angrily berated her sister for abandoning her back in Goldentusk. After finding out that she was being lied to about the Coppice Comb, Uma furiously attacked her sister with a flaming sword. She later raged that she hated Usagi for all she had done, leaving her sister heartbroken and almost hopeless.

Another several months passed before her next encounter with Usagi came, and this time, Uma not only treated her more kindly, she also tipped them off about the "cricket floors," and gained the Warrior Heirs a good advantage in the fight that ensued not long after. Uma was later used as a bait to lure the Heirs down the mountain as a trap, but while the battle raged right in front of the Sea of Trees, Uma slipped away and completed the entire trek up the mountain by herself. Usagi and Uma later had a joyous reunion, and she later served as a candidate for the Horse Heir in the Circle of the Twelve.