Alma's twin brother living in the Rarerare world, and one of Fealina's twin children, Yuuma is also a student of the Winston Academy. He calm and nice, and sometimes helps Akari out in a pinch. He also likes basketball; he says so at one point while talking to Akari. His father died a long time and Fealina is in Eternal Sleep back in Jewel Land, with him living with his grandparents. Yuuma is shown to have a strange birthmark on his right arm similar to that of Alma's, explaining that he and Alma once lived together and not knowing he's a key on unlocking the Battest.