Snow Town Yeti is probably the closest "resort" to Tokyo, and I use the word resort in the loosest way. It's the only ski area I've been to that had and entrance gate to get in and out. talking about out, when you leave they take your lift ticket from you in exchange for a discount ticket for future visits. No keeping the ticket for a souvenir.
Yeti is easy to get to by car, and given the number of local
Visited Snowtown Yeti on 23 October, a Saturday, for a pre-season warm-up. They had been open a week, having laid down a ribbon of crushed-ice on their "A" course, served by a quad lift and a pair lift operating in parallel. The quad was ski-on, ski-off, while the pair was walk-on, walk-off. The first lift had a huge line to get on, probably about a 10 minute wait. The second almost none.