Konoha Suetsugi holds the position of student council secretary at Benio Yonomori's school, harboring intense admiration bordering on worship for Benio. She possesses long blonde hair usually arranged in twintails, golden eyes, and wears the standard school uniform: a white shirt, navy blue skirt, stockings, and a red hair or neck ribbon. This devotion sparks jealousy towards those closer to Benio, particularly Benio's younger sister Kobeni Yonomori and Mashiro Mitsumine. Konoha perceives them as taking Benio's affection for granted and resents their familial bonds, privately expressing desires to replace them as Benio's sister.

Konoha shares the same non-human Inugami heritage as Hakuya and Mashiro Mitsumine, though this aspect remains largely unexplored. Raised in mountainous rural areas, this background surfaces in behavioral traits like reverting to a Tohoku accent when emotionally agitated. Her motivations are significantly shaped by her mother's directive to marry within their rare species. This initially drove Konoha's interest in Hakuya Mitsumine as a potential partner, despite his engagement to Kobeni. Her focus shifts later when her mother orchestrates an arranged marriage meeting ("omiai") with Arata Komagamine, Hakuya and Mashiro's cousin, diverting her attention from Hakuya; the progression of this arrangement remains undetailed.

Konoha's personality exhibits a contrast between public propriety and private intensity. She maintains a composed school demeanor while fiercely protecting Benio's reputation, insisting others use correct honorifics and reacting harshly to perceived disrespect. Her actions often stem from envy, yet she demonstrates persistent pursuit of her goals, especially concerning relationships within her species. Her core traits—her fixation on Benio and her adjustment to the arranged marriage—show no substantial evolution or resolution across the series' adaptations, including its 2024 manga conclusion.