Mob Psycho 100, Volume 4Nothing's stronger than the bond or the rivalry between brothers! Mild mannered Mob has never realized that his younger brother Ritsu, who enjoys all the social success that Mob lacks, nurtures a hidden, desperate envy for the thing Mob possesses that he doesn't Mob's psychic superpowers. But when Ritsu's own powers awaken at long last, the story turns towards a shocking new direction! From the creator of One Punch Man!