I must admit that I have been building panes since 1966 a few years ago I put this plane to gather in about 3 = 4 hours
http://www3.towerhobbies.com/cgi-bin...&I=LXCAS2&P=ML I bought the RTF version for a friend about 2 years ago, my friend knew nothing about RC airplanes. I went to his house and showed him how to finish the job on this same plane.
http://www3.towerhobbies.com/cgi-bin...=LXCXF4**&P=ML it took less than 1 hour to finish this plane. With the discounts I recieved at the time my cost was $215.00 and that included plane, mounted engine, mounted radio equipment, everything.
Even this plane can take a new beginner 10 to 20 hours to build if it is the first time building. Planes that took me a week to build 40 years ago now would take less then 5 hours to build. If a person is an experienced builder it won't take them a long time to build or to teach someone else how to build. I built my first RC plane in 1968 it was a 72" low wing from a kit. I worked on it about 2 = 4 hours each day for about 1 month. When I was finished I still didn't understand how to install the radio gear. A foreman at my work place was a flier, I ask some questions about how to install the gear. He set up a time for me to come to his house. He showed me how to install everything it took about 4 hours (remember this was not an ARF this was a kit). This same man took me out and taught me how to fly the plane. And there were many other fliers in this area that were just as nice as this man was. He didn't charge one penny for his time and effort not that I was not willing to pay, because I would have been happy to pay. Most fliers and builder love what they are doing, maybe the new generation is different. But there are still some old timers like me age 64 that have a great love for this sport and love to help others get into it.
Your first plane will take a lot longer but each time you build you learn more and get faster at building. The point I'm trying to make is it gets much easier with time. when I started out building and flying RC seamed impossible to me also. If you can find a club of a person that flies and or builds most of them will teach you. Even if they charge you $100.00 to $300.00 dollars to build the ARF for you have them let you watch. After watching a person build a plane you come to under stand it's not that hard to do. I like building almost as well as I do flying and many fliers feel the same way I do.
I can't tell you about Japan I've never been there but people are people all over the world. And where ever you go there will be some good people that will help you.
Have you tried contacting the AMA they may be able to give you some help in finding clubs or fliers in your area? http://www.modelaircraft.org/aboutama.aspx