Top of my list of places to visit. Had a v cool trip planned in 2020 which got killed by COVID, and haven’t got around to rearranging yet.
We’d planned to spend a week in Hokkaido. Couple of days in Sapporo, a couple of days at a high end onsen in the mountains in Niseko (e.g. https://www.mokunosho.com/en/), and a couple of days in the East of the island (Shiretoko, Tsurui, Kiritappu, Kitoushi) looking at wildlife.