Mob Psycho 100 Volume 4

Nothing''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!