Yup, Yamagata was my first choice, though I have since started to waver and think that maybe some other prefecture would have been better, especially after what happened in the Tohoku area. But now after some heavy picture-viewing I'm starting to get back in the Yamagata mode and am ready to be surrounded by the mountains!
I haven't received any type of information as of yet, only a .doc file where I'm supposed to answer a pile of questions concerning my motivations and study plans and how studying at Yamagata University will benefit me in the future. So it's basically like the application form all over again, only with more questions this time. Waa. I don't know whether the survey is customary only to YU or if all MEXT students receive a similar one from their university of choice. At least the person in charge of international students seemed very helpful and friendly, and I assume more information will follow once I finish the survey.