Reaching the Isolated Islands of Azuma
There are a number of places in the seasonal wilds of Azuma that cannot be reached without Fubuki’s Parasol. The first of these is the Isolated Islet in the Spring Highlands. If you go to the Save Point at the Vast Plateau and move eastward to find a wooden platform, you can glide to the Isolated Islet.
I find it very difficult to find that particular platform every single time for some reason. Another approach is to find a high rock and look towards the East. You will see a wooden platform that actually is on a small attachment of land to the west of the main land mass of the Isolated Islet. Glide from the rock to that platform and then cross the suspension bridge to find the Dragon Save Point for the area.




Above, you see the Map in detail showing platforms and bridge as brown areas.
Next will be the Summer Remote Island.
Apart from Islands, and Hot Springs, there are secret areas. One is the Winter Torii Gate. You do need the Parasol for this. Go to the Crevasse Save Point. Take the air stream across to the other side. Go immediately to the Frog with a torch on either side. You will see an air stream behind him and a Red Torii Gate high in the mountain on the far side. Sail across and take the narrow path through the mountain to a new Save point. One chest there has a Snow Path but the other holds a rare Rune Crystal.