Official Trailer: https://youtu.be/nle-73CcG1k
Note: the dates in the trailer are incorrect. Season 2 Part 1 airs on January 5th 2021 And Part 2 airs in July 2021.
Personally, although the trailer made everything seem hopeless for Tempest, as someone who’s read the novels, I can guarantee that this arc is one of the best in Tensura. Probably one of my absolute favorite arcs.