Jingi Sagawa bears the title of third disciple to Makoto Yanagi, the "Great Hermit." As a Ley Master, his power lies in water manipulation, mirroring the elemental affinity of Yukito Yanagi. Visually, he stands out with vibrant green hair, yellow-green eyes, and his signature attire: a green jacket worn over a yellow T-shirt.
His personality is distinctly carefree and reckless, marked by a tendency to dodge responsibilities unless financial incentives arise. Jingi openly indulges in alcohol, gambling, and lively socializing, often appearing intoxicated. Yet, beneath this, his fundamentally approachable and cheerful nature makes him a popular figure among Ayaka Island residents. A current of loyalty and protectiveness runs deep, particularly directed toward Yukito, whom he mentors with an older brother's care. This relationship is strained by Yukito's frustration over Jingi's immaturity and persistent drinking.
Jingi's backstory reveals no living relatives, intensifying his reliance on bonds forged with his fellow disciples. He trained alongside Haruaki Kurama and Aka Ibuki under Makoto Yanagi. Though the three initially shared strong camaraderie, later ideological differences—specifically regarding spirit-pacifying methods—sparked friction between Kurama and Ibuki. Jingi navigates this discord, striving to maintain balance within the group.
His name, 沙川尽義 (Sagawa Jingi), reflects core aspects of his character: 沙川 (Sa-kawa, "sand river") signifies fluidity, while 尽義 combines 尽 (Jin, "to exhaust" or "full effort") and 義 (Gi, "justice" or "duty"). This aligns with his dedication to protecting Ayaka, a commitment that persists despite his outwardly lazy demeanor. His journey involves reconciling this responsibility with his personal flaws, channeling his abilities to defend the island's harmony against threats like destructive Ara-Mitama.
Jingi plays a pivotal role in Yukito's growth, guiding him to confront a traumatic past and embrace his Ley Master heritage. Jingi's own development focuses on overcoming his avoidance of duty, gradually revealing a deeper commitment to his father figure's legacy and the island's safety.