Mob Psycho 100 Manga Volume 4 features story and art by ONE.

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!

Mob Psycho 100 Manga Volume 5 features story and art by ONE.

Mob’s younger brother Ritsu has been abducted by the sinister superpowered cabal, Claw! In order to save him, Mob and Teru team up with Dimple to infiltrate the mysterious organization…in a psychic battle that will pit middle school kids up against adults with money, resources…and powers of their own!

Mob Psycho 100 Manga Volume 6 features story and art by ONE.

Mob and the others have made their way deep into Claw's hideout, only to be captured. Unexpectedly, they find that someone without any power at all (but plenty of chutzpah), Reigen, has followed them into this dangerous situation. Mob would prefer to run, but must to fight to protect his friends. Under all this stress, Mob finally explodes . . . in front of his master!