The most significant moment isn't a final battle, but Reigen’s desperate confession that he has no psychic powers. Critics at Gamerant note this truth reached "the Mob" inside Shigeo, resolving their internal conflict by showing that everyone has a "hidden side" they might despise.
Studio BONES is praised for its "brilliant animation" during the final storm, particularly the use of the original opening theme as an insert song as Reigen charges toward Mob barefoot. Mob Psycho 100 III - Episode 12
Reviewers from Anime News Network pointed out the "poetry" of the ending, which returns to the very first scene of the anime through its music and themes. The episode concludes with Mob laughing sincerely—a powerful contrast to his emotionless start in Season 1. The most significant moment isn't a final battle,