I don't believe so, the only Japanese players that I know of thus far at this point are Kuni, Dan, Issei, and Daigo. However Issei lives in the US now, so he "technically" doesn't count, however he is japanese and used to live in Japan, so I guess that counts in a sense, lol.
I'd of thought other players like Nuki would have showed up, but don't know up to this point.
Edit: I was told Nestor entered too, however was knocked out during the 1000 player bracket matches...ouch.