I didn't know what to write, so for now I only replied to what everyone was curious about, but now I think I finally have a bit of a sense of it, so I'll try writing a little.
For the surgery, it seems like they used every possible material: osteotomy, silicone, donated costal cartilage, ear cartilage, and septal cartilage lol
The reason for removal was that the tip of my nose would periodically turn red, and the foreign-body sensation was really severe. I also wasn't particularly happy with the shape.
I think it was hard for me to live my whole life uncomfortably with such a hard nose. If I had known it would feel like someone else's nose, I wouldn't have had the surgery...