Yuuma Jinnai (神内祐馬; Jinnai Yuuma) is Akari's crush and Alma's twin brother. Yuuma attends the same school as Akari and lives with his grandparents. He believed his mother died when he was young and it is presumed that his father has died too. When that happened, Yuuma was seperated from Alma and soon forgot about this. However, Alma remembered everything because she had been watching him from Jewelland.