Ryuubi, Gentoku

劉備玄徳

Manga
A clumsy, scatterbrained bespectacled bookworm who appears to have no combat skills. She cannot even swim. The "English Adaptation" added elements reflecting the adapter's viewpoint and humor, including a fear of homosexuals, uncertainty about her own sexuality, and the conviction that Kanu and Chouhui are lesbians attracted to her. These elements are absent from the original Japanese version. Ryuubi is destined to become a great leader but is currently too timid and carefree to fulfill that role. Nevertheless, she remains eager to do her best for her friends. She is best friends with Chouhi and possesses the most destructive dragon ever seen, which is so evil that it radiates entropic energy and nearly caused her to disembowel herself before Ryomou, Chouhi, and Kanu managed to stop her, leaving all of them critically wounded. She seems unaware of this and is prone to occasional highly destructive outbursts when her dragon rouses. These outbursts occur when Ryubi sees her friends get hurt in battle.
Anime
The initial difference lies in the timing of her first dragon possession. In the manga, the first time she was overwhelmed by her dragon occurred three years before the start of the series. In the anime, it happens during the second series. When Kanu was forced to surrender to Sousou, Ryuubi's determination to rescue Kanu helped her slowly gain control of her dragon's powers. She realized that her school had to go into battle with Nanyo and Kyosho to finally end the conflict. Although she was targeted by many toushi in the battle, she was capable of protecting herself. Kanu's return gave Ryuubi more encouragement. She was almost strangled to death by Sousou but was saved by the returning Hakufu. Both Ryubi and Hakufu teamed up to destroy Sousou and win the battle for Seito and Nanyo. She is now back to her normal book-reading self.