Prequel, but we retain some of the same characters different MC and looks to have a conclusion of the classmates from S2. As this is a movie there is much less filler, and hero development the story is nicely woven throughout and it seems our MC just mostly has quite a talent for what he does.
Art throughout is brilliant, with very unique shots and beautifully animated action. The story pacing is much quicker paced keeping me invested throughout.