“I use the contrasting elements to make a new power . . . I want to create a new atmosphere, a new feeling,” says Kei Ninomiya, who presented his first full collection at Paris Fashion Week in March. It was a triumph of innovation with shrunken biker jackets paired with voluminous ballerina skirts embellished with flowers and incongruous materials like fur and tulle stitched together in a flurry of craftsmanship.