You might start here and see if any of the dancers working with it can give you current information. I will also have a friend to dances salsa that is in Japan teaching right now, so I'll try to reach him and get any contacts he has made.
Japan Salsa Congress (Tokyo, Japan) - Festivalsero.com
I would LOVE to be there to help you, since my favorite dances are Tango, Bachata and Salsa ..... in that order, but can't afford the trip.