“For me, there is no distinct sex because people become men or women when they grow up,” explains the Japanese artist Yoshitomo Nara. “Children are more neutral. That is the way I see them.” Nara is known for super-stylized depictions of large-headed children, often isolated in monochrome backgrounds. He portrays them in ambiguous emotional states such as melancholy and contemplation, but they can also look sly, threatening, even alien. This retrospective presents paintings, drawings, and sculptures from 2006 to the present. —E.C.