Korekiyo Ryōguchiya acts as a supporting character and sidekick to the primary bully, Jabao Jaba, who targets Honmaru Edojo. Notably short, Korekiyo contrasts sharply with Jabao's imposing build. He initially projects politeness and propriety, yet his dialogue consistently laces proverbs, idioms, and smart remarks with sarcasm aimed at Honmaru to deepen his humiliation. Academically and socially struggling, Korekiyo lacks physical strength, financial resources, and popularity with girls, cementing his underdog status alongside Jabao within the class. He regularly steps in as a commentator during sporting events within the series, providing observational insights. His connection to Jabao runs deeper than simple companionship; they share a bond formed as childhood classmates. Subtle hints occasionally suggest Korekiyo possesses a latent capacity for caring about peers, though this remains secondary to his established role in Jabao's circle.