Mob Psycho 100, Vol. 14 (Manga)

Thanks to the Divine Tree’s influence, the entire town—including Mob’s classmates and his brother, Ritsu—has been brainwashed into joining the Psycho Helmet Cult!

Mob decides to investigate further and faces off with the cult’s mysterious leader that everyone is now worshipping, but what can he do against such an omnipotent power?