Nikko vs Shuzenji vs Kusatsu
So I ended up with a dilemma regarding my itinerary for my late September travel in Japan (which is getting more packed the more I review it even if I don't move much): for my second week, after the last day of the Tokyo Gaming Show, I was considering a trip to FujiQ and Hakone (2D-1N), but the problem is after that. Kusatsu is a nice onsen town but that's it, there's nothing much to explore in the surroundings. Nikko has a great historical and lake/forest scenery, but Kinugawa onsen serves mostly as a resting point, the "modern" hotels and onsens looking a bit outdated. Lastly Shuzenji in the Izu peninsula combines boths but to a lesser extent ("jack of all trades") and is a bit trickier to arrive even if departing from Hakone.
Those (Hakone included) are my options for between the 22-25, I'm leaving the weekend for shopping and exploring Tokyo (specially its nightlife), with the possibility of one day for Disneysea, since my return flight is the 28th at night.