First two weeks was ice, rain and more ice. Second time around we got some snow on sunbaked hardpack. We still had a blast both times though. Japan is one of the best places in the world imho (generally speaking).
OP if you get the opportunity, go, you won't regret it. Do you have any specific questions?
Some dust on crust in Happo One (Hakuba):
SkiLogik Contour Röjk superwear
"Why would he be a nice person? Not like he has a soul or anything" - Miomo on Shaun White