Moruda Wakasagi is a high school student living in the seaside resort town of Atami. He is the younger fraternal twin brother of Kuriru Wakasagi and a classmate and friend of Kyusho Ishimochi, serving as a supporting character in the series. His background is that of an ordinary student who attends the same school as his sister and friend. His personality is not extensively detailed in the source material, but he is portrayed as a quiet and observant individual who often wears glasses and a school uniform. He appears to have a relaxed and somewhat sleepy demeanor, frequently falling asleep easily and making dry, understated remarks about his friend Kyusho's absent-mindedness. His motivations are not explicitly stated, but he participates in the daily life of the community alongside his peers, attending school and joining in local events. In the story, he appears in scenes involving group activities, such as bringing cakes to celebrate the anniversary of Kinme Cleaning, demonstrating his role as part of the local community. His key relationships include his twin sister Kuriru, with whom he shares a sibling bond, and his friend Kyusho, whose quirks he good-naturedly observes. Development is minimal as a supporting character, but he is shown to be a reliable and low-key presence among his friends. He has no notable supernatural or exceptional abilities; his role is grounded in slice-of-life interactions. Overall, Moruda Wakasagi contributes to the series' depiction of community and everyday relationships in Atami.