If you really have time on your hand and want to give it a try. This 73 year old guy did. Note his steady hands at his age and he doesn't need no stinkin' resistance soldering iron with a fine tip!
If those are N scale I'll eat my hat. Japanese people tend to be petite, but come on, man. He ain't Tom Thumb.
I guess it's a good thing the search engine is working again. There doesn't seem to be any way to find what you're looking for on this site when it isn't.