Kousuke Oura, vice principal of Tokisadame High School and commonly addressed as “Kyōtō-sensei,” maintains a composed and serious exterior that masks an undercurrent of solitude from his mundane private life. His calm demeanor belies a mischievous streak, as he delights in subtly unsettling Principal Shinonome through playful antics, perpetuating a running gag where Shinonome fears Oura’s potential usurpation of his role.

Elderly in appearance, Oura sports short grey hair, circular glasses, and a weathered face. His wardrobe—a crisp collared white shirt, dark yellow-green tie, grey undershirt, dark chino pants, and brown shoes—reflects his professional stature, contrasting sharply with his strained personal circumstances. Financial hardship plagues his home life, evident in an episode where he scavenges for materials to craft a straw doll, hindered by empty pockets and an inability to afford rice. This frugal existence, exacerbated by his wife’s absence, drives him to seek solace in brandy, though he nervously monitors his liver health.

His daughter Kimiko occasionally visits with his grandson, Mi-chan. Oura strives to embody the affectionate grandfather during these encounters, though Mi-chan’s relentless curiosity often traps him in awkward dilemmas. Despite his reserved disposition, Oura quietly expresses love, offering to buy gifts for the boy.

Central to his character is his dynamic with Principal Shinonome, a blend of lighthearted rivalry and Shinonome’s comedic paranoia. Their interactions peak during school ceremonies, where Oura’s deadpan humor intentionally amplifies the principal’s anxiety. Though his backstory remains sparingly detailed, his role as a secondary figure balances the series’ absurdity with glimpses of quiet struggle, intertwining everyday hardships with eccentric workplace theatrics.