Hey, I got to a point where I tried picking up a second boss key, but it seems to already have been handled. Did you forget to go back and pick up the other one after clearing the dungeon, perhaps?
Hello! I did have something weird like that happen, now that you mention it. I was in another dungeon, and I noticed that I had a master key already and was able to sequence break the dungeon that way, and the master key in there couldn't be picked up. I didn't think about taking that master key specifically and using it back on the other dungeon I got stuck on. That might let me continue on. Thank you!