Here is the contact info for JICA on Okinawa:
Okinawa International Center
1143-1, Aza Maeda, Urasoe City, Okinawa Prefecture 901-2552
Tel: 098-876-6000 Fax: 098-876-6014
E.C.S Japan is an English Communication Service consulting organization, specializing in giving students a pratical experience of learning English through face-to-face group or private lessons and also via Yahoo Messenger Web-Cam lessons.