Blood Ties and Crossed Wires Masaharu Fukuyama, left, and Keita Ninomiya in "Like Father, Like Son." Fuji Television Network/Amuse and Gaga Corporation Years after the fact, two children are found to have gone home from the maternity ward with the wrong parents. They have grown up in very different circumstances, and their biological parents now face difficult choices. The premise for the ABC Family drama "Switched at Birth"? Yes, but it also describes "Like Father, Like Son," an affecting film from the Japanese director Hirokazu Kore-eda. In this story, the children are 6. One, Keita, has been raised in overprotective affluence, an only child. The other, Ryusei, grew up in humbler circumstances, with siblings and amid carefree chaos. The film focuses largely on Keita's father, and it is fueled by carefully observed tidbits - differences in how the boys hold chopsticks, in the foods they're allowed to eat. The film won the jury prize at Cannes last year. Opens Friday, IFC Center, 323 Avenue of the Americas, at Third Street, Greenwich Village; 212-924-7771, ifccenter.com.