Gentoku Ryuubi leads Seito Private School as Liu Bei's successor. Her green eyes contrast with long brown hair usually styled in two ponytails. Her physical measurements are 96/61/92, and she primarily wears the Seito Academy uniform. The manga states her age as 17, while the anime depicts her as 18. Naturally kind and gentle, she fiercely protects friends, often physically shielding them despite lacking combat prowess. She exhibits little inherent leadership drive or strategic acumen, frequently appearing carefree or oblivious to her duties. This demeanor starkly opposes her transformed dragon state, where she becomes merciless, sadistic, and indiscriminately violent towards allies and foes alike, often smiling during brutality. Her dragon, Rairyuu (Lightning Dragon), ranks among the Three Great Rulers' most destructive forces. Its first awakening occurred three years pre-manga, though the anime (*Dragon Destiny*) shows initial activation during Shimei Ryomou's Dragon Jade attack. This transformation radiates entropic energy, inducing self-destructive urges. She nearly disemboweled herself before Ryomou, Chouhi, and Kanu subdued her. Subsequently imprisoned in Seito's basement for attacking anyone approaching, she remained uncontrollable. Determination to rescue the captured Unchou Kanu from Kyosho Academy galvanized her to embrace leadership seriously, securing Koumei Shokatsuryou's loyalty. She forged a Nanyo Academy alliance against Kyosho, contributing to the Battle of Red Cliffs. There, she fought Bunken Gakushin but was overpowered until Kanu intervened. Later, confronting demonized Sousou Moutoku, she initially struggled before mastering her dragon power. She then collaborated with Hakufu Sonsaku, merging their water and thunder dragon elements to defeat Sousou. In *Great Guardians*, her relationship with Kanu became central. Kanu harbored romantic feelings, which Gentoku largely missed, sometimes finding Kanu's intensity overwhelming or frightening. Possessed by Genpou Saji via Ryofu Housen, she nearly killed Kanu by impaling her. Kanu's declaration of loyalty during the attack freed her, mending their bond. She later gifted Kanu her favorite book, stating, "I wanted to give my favorite book to my favorite person." By *Xtreme Xecutor*, she actively pursued becoming a more responsible leader while retaining her kind, ditzy nature. She notably rescued an unconscious Bachou Mouki and ensured her recovery at Seito High School. Her combat abilities are minimal, ranking her an E-level fighter with poor physical prowess. However, her dragon transformation grants immense power, initially uncontrollable but mastered during critical battles. Dragon Jade possession can suppress this power, though it fluctuates throughout conflicts.