Ganmo Unohana is a character from the manga and anime series "Himitsu no Akko-chan," created by Fujio Akatsuka. His full name, a play on both a sautéed tofu dish and the Japanese deutzia flower, was established in the first anime adaptation. Ganmo typically appears in cameos as a neighborhood child but is more prominently featured as a rival to Chibita in the "Osomatsu-kun" franchise after being hired by an entertainment manager. While popular among other children like Hatabō, his relationship with Chibita remains competitive and smarmy due to their roles as rival entertainers. In appearance, Ganmo is a small boy, slightly taller than Chibita, usually dressed in a kimono and overcoat that conceals his arms, giving them a stubby, bird-like quality. He has whisker-like markings on his face and a bowlcut hairstyle. Early designs closely resembled Chibita, though later versions gave him a pointier mouth in profile. His hair is light brown in color images for the manga and later anime, though it appeared gray in the first "Himitsu no Akko-chan" anime. Ganmo's personality is initially mature and cool-headed for his size, marked by adult-like behaviors such as drinking coffee and an old-fashioned demeanor, including a fondness for rakugo. In "Osomatsu-kun," his portrayal becomes more bratty and smug, often flaunting his successes to provoke Chibita. His speech is distinctive, using the sentence-enders "de gesu" and "de ansu" to emphasize his old-fashioned style. Outside his rivalry with Chibita, Ganmo is frequently seen with his friend Kankichi, who lets him stay at his "secret base." A mother figure runs a tofu shop, suggesting a family business, though other relatives are unconfirmed. Another boy, Tamao, appears with him in one chapter, possibly a brother or friend, alluding to the series "Otasuke-kun," where Tamao is the younger brother of Otasuke, a character resembling Ganmo. Ganmo's age is ambiguous in the original manga, with assumptions placing him near Kankichi's age or slightly older, though anime adaptations solidify him as the same age as other child characters like Chikako. Regarding his role in "Himitsu no Akko-chan: Umi da! Obake da!! Natsu Matsuri," available sources do not provide specific details about his appearances or actions in this film.