Jae-ha holds the title of Ryokuryuu (Green Dragon), inheriting the bloodline of the green dragon deity. His dragon powers manifest physically in his right leg, granting extraordinary jumping prowess that mimics flight and delivers powerful kicks. This draconic limb displays green scales and sharp nails, which he habitually conceals with bandages and boots due to deep-seated insecurity rooted in childhood trauma inflicted by his predecessor, Garou. He gradually reveals this leg more openly among trusted companions, signaling growing self-acceptance. Born within the secluded Ryokuryuu village, Jae-ha endured imprisonment and mistreatment from villagers fearing his powers would draw outsiders. Garou, the previous dragon warrior, subjected him to physical and emotional abuse while thwarting escape attempts. At age twelve, Jae-ha fully awakened his abilities as Garou weakened, enabling his escape. He invited Garou to join him, but Garou sacrificed himself to distract pursuing villagers, declaring hatred while tearfully urging Jae-ha to never return. This complex departure launched Jae-ha's solitary journey. After years of wandering, Jae-ha settled in the Earth Tribe port of Awa. Captain Gi-Gan of the local pirates welcomed him into her crew, offering compassion and stability. She became a maternal figure, instilling his core principles: respect for women, moral integrity, and protection of the vulnerable. His service with the pirates earned him the moniker "The Flying Pirate," reflecting his combat style blending aerial mobility with thrown blades. Jae-ha initially resisted joining Princess Yona's group, fearing the dragon bloodline's legend would enslave him. He concealed his identity and threatened Yona when confronted. His perspective shifted after witnessing her courage firsthand—scaling a treacherous cliff for medicinal herbs and confronting human traffickers in Awa. Recognizing her resolve to protect others without demanding servitude, he voluntarily pledged himself to her quest. Personality-wise, Jae-ha presents as flamboyant, vain, and teasing, often pursuing beauty and flirting with women. He openly acknowledges his "perverted" tendencies yet strictly adheres to chivalrous principles: never exploiting vulnerability, respecting rejection, and defending women unconditionally. Beneath this playful exterior lies a profound value for personal freedom—a reaction to childhood imprisonment—and resistance to any destiny dictated by his dragon heritage, favoring self-determination. Despite his aversion to confinement, Jae-ha develops deep loyalty to Yona's group. He evolves from a self-focused individual into a protective "big brother" figure, mentoring younger members like Shin-Ah and forming a close bond with Hak. His observational skills enable him to mediate conflicts, such as restraining impulsive teammates like Kija, and he subtly supports Hak's romantic feelings for Yona. Though initially attributing his protectiveness toward Yona to the dragon blood's influence, he later acknowledges genuine personal devotion to her cause. In combat, Jae-ha favors throwing knives or daggers from aerial positions, creating projectile barrages using blades concealed within his robe's inner pockets. His attire reflects Kai Empire influence: a dark blue robe with yellow accents, a high collar, and a black midriff top exposing his torso. Additional traits include proficiency with instruments like the erhu and flute, which aid group missions or income generation. Though traumatized by Garou and his village, he avoids bitterness or vengeance, focusing on living fully despite the shortened lifespan typical of dragon warriors.