Makoto Nakaoka is a supporting character in the anime film Hiatari Ryōkō! Kasumi Yume no Naka ni Kimi ga Ita, which serves as a sequel to the Hiatari Ryōkō! television series. In the original manga and live-action drama, he is known as Makoto Aido, but in the anime adaptation his name is changed to Makoto Nakaoka. He resides in room one of the boarding house Hidamari, where he lives alongside the other male tenants and the female protagonist Kasumi Kishimoto. Makoto is a high school student at Meijou High School, attending the same grade as Kasumi and the other boarders. His most distinctive physical trait is his very thick glasses, which are described as resembling the bottom of a milk bottle. This appearance gives him an eccentric and somewhat mysterious air among the group. As a character, Makoto is primarily used for comic relief throughout the series; his odd behavior and unusual remarks often lighten the mood. Despite his seemingly frivolous role, one episode of the live-action drama reveals that he is actually a prodigy in medical studies, suggesting a hidden depth and intellectual aptitude that contrasts with his quirky demeanor. In the film, his role remains supporting, and his motivations are not deeply explored; he typically acts as a background presence among the boarding house residents, interacting with the main cast in casual, everyday situations. His key relationships are with the other boarders—Yusaku Takasugi, Takashi Ariyama, and Shin Mikimoto—as well as with Kasumi. He does not undergo significant character development or possess any notable physical abilities; his standout trait is his academic brilliance, though this is only hinted at in the original series and not elaborated in the film. Overall, Makoto Nakaoka contributes to the ensemble dynamic as a quirky, bespectacled boy whose primary function is to add humor and an air of mild oddity to the boarding house setting.