Jude, a green-haired researcher at Salutania’s Medicinal Flora Research Institute, matches the protagonist in age and intellect. Born into a merchant family’s wealth, his rare affinity for water magic—an anomaly among commoners—secured his place at the Royal Academy, paving the way for his expertise in herbalism and potion craft. Tasked as the protagonist’s mentor, he imparts foundational knowledge of magic and alchemy, bridging her transition into this unfamiliar world.

Their first encounter in the palace gardens sparks a partnership defined by patience and guidance. Jude navigates the protagonist through medicinal herb applications and magical theory while collaborating on institutional projects alongside figures like director Johan Valdec. His pragmatic yet approachable nature surfaces in moments of cultural friction, such as accidental breaches of local etiquette, which he diffuses with humor and adaptability.

Though his commoner roots and academic ascent are noted, Jude’s focus remains on advancing the protagonist’s scientific growth and strengthening communal ties at the institute, his actions consistently reflecting loyalty to both his craft and those under his tutelage.