His film “Nobody Knows” was crushingly sad, a look at what happens when adults abandon children, and featured some tremendous performances from the young leads. He’s worked similar magic here with a tale about about a young boy, Koichi, who wants to reunite his divided family. Using the building of a new bullet train station as the instigating incident, the film looks at the way Koichi’s ardent desires for his family reshape the world around him, although not always in the ways he expects. This film has charm to spare and a clear-eyed sense of wonder about the world, and while it meanders a bit, it is never less than engaging.