Kuroda's sword art is called Komagawa Kaishen ryu, I believe. I took one of his seminars in Vegas last year at the Aiki Expo, where he demonstrated his jujutsu, batto and kenjutsu. The jujutsu was some of the strangest stuff I've ever felt. Kuroda's iai, however, was absolutely the most awesome iai I've ever seen. Hands down. His speed and precision was so remarkable, it's hard to describe adequately. I ran my impressions by Toby Threadgill and Ellis Amdur while I was there, and they both had there own unique adjectives to describe his skill with a sword.
I still remember he would perform an iai kata, which was so fast you couldn't tell what he did with his feet and hands. Then he would smile and say softly, "Let me slow it down this time. Watch my feet." Then he'd do it again. Still too fast to believe. "Did you see?" he asked.
"Uh, no."
Kuroda smiles and moves on to the next kata.
Regards,
Arman Partamian