Answer:
First get a plane ticket to Japan.
1. Review all your competitors' presence in Japan. Is the market even ready for your products and services?
2. If there is someone else already in Japan, then look at attending a trade show in Tokyo. And, yes, this will involve getting a plane ticket for Japan.
3. At the same time as the trade show, allow an extra 3-4 days AFTER the trade show for follow-ups and for meetings that you should be organizing before you even leave for Japan. Japanese involved in foreign business all read English, although they may not speak it.
4. Don't forget to contact your country and state trade development organizations. Japan is the world's third largest market, so they pretty much all have representation here.