Chuntarou Kasugai is a small, brown sparrow in the anime 'Kimetsu no Yaiba' (Demon Slayer). He serves as Zenitsu Agatsuma’s kasugai crow, delivering mission orders from the Demon Slayer Corps. Unlike other crows, Chuntarou communicates through chirping, which only Zenitsu seems to understand. He is known for his loyalty, persistence, and comical interactions with Zenitsu, often motivating him or scolding him for his cowardice. Chuntarou adds a lighthearted touch to the otherwise intense series, supporting Zenitsu throughout his journey.