Does anybody know how to find someone by name in Japan ?

Question:

Please , I'm currency living in Japan., I need to find a friend , I know his name and last name ,.
I have tried already by calling 104(NTT) and by internet but I couldn't find.
Does anybody know another way to find ?
Thank you !!

Answer:

It's very difficult to find someone in Japan if you know only his name. You tried to search him on Internet, right?

Another way is to use Mixi and other social networks. But it does not help much.

If you have money, you can ask private detectives.