By John Briley, Special To The Washington Post You don’t have to go to Japan to ski, eat sushi and soak in geothermal hot springs. But if you want deep powder without lift lines for $40 a day, the best sushi and ramen in the world in intimate, family-run restaurants and a naked soak in a 105-degree spring with a view of the volcano that is heating your water, in the comfort of your hotel, then follow the drifting snowflake to the Land of the Rising Sun. I am thinking this as I sit in the bustling lodge at a two-lift ski area called Seki Onsen, picking tunes on a public guitar that I pulled from the wall, with the melting vestiges of a 15-inch powder day still dripping from my boots.