Bunpei Kinoshita is a supporting character in the anime Mononoke, appearing in multiple story arcs of the series. He is a traveling medicine salesman who journeys across feudal Japan, a profession that brings him into contact with various people and the supernatural events that the series' protagonist, the Medicine Seller, investigates. Physically, he is an adult male with brown hair cut to ear-length and black eyes. His typical attire includes a cap, gloves, and a uniform, often featuring distinctive facial marks.

Kinoshita is portrayed with a generally cheerful and carefree demeanor, often seen with a smile or a laugh regardless of the situation. This outward optimism, however, is complemented by a sharp and business-savvy mind, as he is consistently alert for opportunities to sell his wares and make a profit. This entrepreneurial spirit is a core part of his identity as a traveling merchant. He is also described as having an analytical and intellectual approach to problem-solving, preferring to rely on logic and rational explanations even when confronted with the inexplicable. Despite this analytical nature, he possesses a deep sense of empathy and sensitivity to the emotions of others, which allows him to connect with people on a meaningful level. He is prone to introspection and can sometimes feel like an outsider, yet he channels these feelings into his work and interactions.

Within the story, Kinoshita serves as a crucial supporting figure for the Medicine Seller. His role is often that of a foil, providing a contrasting perspective. While the Medicine Seller perceives the mononoke as malevolent spirits that must be exorcised, Kinoshita tends to view everything, including the supernatural entities they encounter, through the lens of a merchant, seeing potential value or a commodity to be traded. This difference in worldview creates an interesting dynamic, yet the two characters maintain a mutual respect for one another and cooperate to resolve the mysteries surrounding the mononoke. His role is thus essential to the Medicine Seller's investigations, adding depth to the narrative by presenting an alternative, more worldly point of view. He is not simply a comic relief character but a mature and integral part of the series' complex world. His motivations are driven by his dual nature as both a cheerful traveler and a shrewd businessman, finding joy in his journeys while constantly seeking his next opportunity. Information regarding any specific character development arc or notable supernatural abilities is not available.