Makoto Ninomiya

A second-year student at Yumegaoka High School, this dedicated senior member of the diving club frequently practices around the Izu coastline, where he first crossed paths with Pikari. As the younger twin, he possesses a more submissive and gentle temperament compared to his more domineering sibling, Ai. Despite the difficult treatment he receives from his sister, he remains a key figure within his school's athletic community.