Kaoru operates a cheerful mobile donut cafe within Clover Town's Yotsuba Park. He offers warm encouragement and advice to Love, Miki, and Inori, occasionally treating them to free donuts. Privately aware of the fairies Tarte and Chiffon's true identities, he readily entrusts Tarte with watching his donut stand when needed and interacts with him naturally. Kaoru maintains an easygoing and perpetually cheerful demeanor, often sharing lighthearted, nonsensical jokes and embracing life's simple pleasures. The events of the film "Fresh Precure! Omocha no Kuni wa Himitsu ga Ippai!?" unfold within the Kingdom of Toys and spotlight Love's stuffed rabbit Usapyon and the antagonist Toymajin. Kaoru does not participate in these specific events.