Cuttlefish That Loves Diving
This was a great chapter! It helped wrap up and give value to the whole arc. It was interesting to see the Nightmare King psychologically evaluate Lucien. This wasn't simply to help out the MC apparently, the actual mission was to expand the Nightmare King's mind to Arcana, through Lucien's radical thoughts.
As expected, the "nightmare" was created by the Nightmare King. The look into Lucien's mindset is quite refreshing. I think there are a lot of elements from Lucien's original world confusing the dickens out of Stennis. Lol. Poor guy. At least, Lucien didn't test out Quantum Physics while in there--he probably would've died.