Kuehiko Roshihara, an anthropomorphic Russian blue cat with slate-gray fur and petrol-hued eyes, embodies a perpetually pessimistic and grouchy disposition, starkly opposing his more spirited peers. His realism and apathy manifest in a methodical, detached approach to part-time jobs, where his calculated composure sometimes yields unexpected efficiency despite a clear aversion to expending undue effort.

Having attended the same university as a colleague, he juggles diverse roles—delivering packages, staffing convenience stores, selling apparel, and managing car rentals. These ventures underscore his adaptability and sporadic growth, particularly in customer service, where his subdued manner contrasts sharply with overtly cheerful strategies, occasionally proving quietly effective.

His work life intertwines with eccentric figures: a civet coffee-obsessed supervisor, a goat in sheep-themed attire overseeing a clothing boutique, and a recurring yellow koala who offers enigmatic philosophical insights. Kuehiko responds to the koala’s musings with either baffled silence or indifferent dismissal.

Focused on navigating workplace dynamics, his story revolves around balancing a reserved, cynical nature against the unpredictability of each job, with no elaborated backstory or external media expansion beyond his initial narrative scope.