This post has content warnings for: Undertale spoilers, King Arthur spoilers? I guess?.

Beautifully considered piece.
A more optimistic reading could say that the king's return is one of renewal rather than strict threat of violence.
Thanks for all this info! I had assumed 'bergentrückung' referred to the trope as a whole, I didn't know it was very specifically about the event of the King's return. That does change a lot of its meaning and symbolism!