How to become a kenkyuusei in Japan and where can I find precise info to apply?

Question:

Hello everyone (primarily ex/current/future foreign students in Japan)!
I graduated Japanese philology in a European country. I spent a year in Japan as an undergraduate student (MEXT)... Suffice to say, that wasn't enough of Japan for me, so I would really like to go there for a longer period (kenkyuusei is a way to do that). I don't know what I would research, but I'll think of something.

I googled for advice, and I couldn't really find anything useful. Please, help me! Basic info will help as well.

Answer:

http://www.g-studyinjapan.jasso.go.jp/en/

http://www.jpss.jp/en/

まってるよ（＾＾）/