Where/How to use the animations for the models? (Aren't their bones messed up when porting?)

[swift furnace]

Apparently if you go into microsoft 3D Viewer you can just play the animations
but when u import them into blender all of their bones are like, vertical, idk if thats intended, and if it is, where do I find and use the animations inside blender?

[uneven trench]

So: to extract anything in .fas Kurimuu2

Then what you use depends of what you need to do