Ryōhei Nakazato possesses a distinctly adult appearance with a dark complexion, short hair, a beard, and a taller stature than his peers. He exhibits a carefree and spontaneous personality, frequently presenting himself as a self-proclaimed ladies' man who employs cheesy pickup lines, especially directed at Sora Kasugano. Despite this behavior, he displays perceptiveness and offers sound advice when needed, effectively identifying core issues. His background establishes him as a childhood friend of Nao Yorihime and the best friend of Haruka Kasugano, also sharing a close friendship with Akira Amatsume. Across all media, he consistently pursues Sora Kasugano with flirtatious advances, which remain unreciprocated and often annoy her. This unrequited interest includes attempts to see her in swimwear and expressions of envy toward Haruka Kasugano's daily proximity to her. Ryōhei plays a supportive role in interpersonal relationships, aiding in the reconciliation between Nao Yorihime and Haruka Kasugano after their relationship faltered. He demonstrates awareness of others' emotional states, recognizing Nao's melancholy during Haruka's absence and expressing relief when her demeanor improved after Haruka's return. He serves as a source of local gossip and social connectivity within the village, openly sharing information about newcomers and rumored observation spots. His nickname "Double Akira" (Wあきら) stems from shared traits with Akira Amatsume. A recurring trivia point notes Ryōhei as the only major character across all official media without any romantic relationships or developments in his storyline.