Mirai (2018)

Plot

Four-year-old Kun struggles with the arrival of his baby sister, feeling overshadowed and unhappy. In his family's enchanting home, he encounters figures from their past—relatives and pets alike—who guide him on a journey of understanding and growth. These magical interactions help Kun navigate his feelings of jealousy and insecurity, ultimately showing him the joys and responsibilities of being a big brother. As he learns to embrace his new role, Kun discovers the importance of family bonds and the love that transcends time.