Gou is Rokka’s steadfast caretaker and partner, entrusted with safeguarding her well-being and meeting her every demand. His sharp green hair and eyes mirror his tailored emerald suit, accented by a monocle perched on his right eye. Though outwardly composed and formal—addressing Rokka with the respectful “-sama”—he harbors quiet conflicts between duty and personal care, often yielding to her impulsive choices despite reservations. During the Magic Exam, he reluctantly aids her journey to the human world to chase Ichii, repeatedly advocating caution yet prioritizing her safety above all.

Beyond servitude, he assumes a parental role, soothing Rokka’s fears and tending to her daily needs, from meals to emotional support. Subtle defiance of strict professionalism surfaces in moments like covertly endorsing her rebellion against arranged marriage plans. His origins trace to his name, meaning “five,” marking him as the fifth character crafted in his series.

Gou cultivates bonsai trees with precision, cherishing a pine specimen, and savors green tea paired with sweet red bean jelly. While unflappable in duty, his focus renders him oblivious to external affections like Hatsuka’s quiet admiration. Rokka’s whims remain his sole vulnerability, binding his unwavering loyalty to her happiness.