Bent on revenge, a traumatized ex-police officer must infiltrate a yakuza organization by befriending one of the group’s most unhinged members.

War may be over, but for the children of Miwa Nishikawa’s latest film — adapted from her forthcoming novel — survival has only begun.

In 1963, as Japan emerged from the shadows of war into an era of extraordinary transformation, an unlikely song made music history. “Ue o Muite Arukou,” known internationally as “Sukiyaki,”…