Mirai

Four-year-old Kun Oota has led a sheltered, pampered life in his quiet neighborhood, with only his parents and their dog, Yukko, for company. But when his baby sister Mirai arrives, his world is turned upside-down-suddenly, he's no longer the center of attention. No matter how much he whines or throws fits, his parents' focus shifts to Mirai, leaving Kun feeling lost and resentful. To help him adjust, Kun is whisked away on a remarkable adventure through time, encountering his family at different stages of their lives. Along the way, he begins to understand what family truly means-and what it takes to be a big brother.