I met Yasutaka Kojima at Photoquai in Paris last year. I don't know that much about him apart from the fact that he studied with Masato Seto, a former assistant of Daido Moriyama's and a terrific photographer in his own right. Kojima is based in New York, where I think he is still completing his studies. He is still experimenting with different styles, and I would say that he has yet to find a consistent vision of his own, but there are some nice images on his site.