Re: Looking for a dojo in Japan...
If Ki society isn't his cup of tea, Otawara is about 45 minutes drive or about an hour by train from where I used to train in Shirakawa. It is a fairly conventional Aikikai honbu style, but they are very good and teach excellent ukemi. He will certainly get a workout. PM me if you are interested and I'll get in touch with sensei. I'm sure someone would be happy to meet your son at the station to guide him to the dojo.