Salt Middle School undergoes deep cleaning lead by the student council president, Kamuro, and one thug after another gets targeted. Meanwhile, the story about Mob defeating the shadow leader at Black Vinegar Middle School starts to get embellished and takes on a life of it's own, and Mob gets to be known as "White T Poison." All of the gang leaders from the other schools start to gather at Salt Middle School to confront White T Poison. Also, Ritsu awakens to his dormant psychic powers, and Dimple manages to convince Ritsu to pair with him to become stronger than his brother. Ritsu finally gets to experience those powers for himself, but...

Peaceful days return after Mob's fight with Teru. As usual, Reigen continues to trick people as a fake psychic, and the president of the Telepathy Club, Kurata Tome, drags Mob around to find other espers. Then one day, a mysterious man talks to Mob's younger brother, Ritsu...

Mob is challenged to a one-on-one fight with Black Vinegar Middle School's shadow leader, Hanazawa Teruki, otherwise known as Teru. Mob doesn't use his powers but Teru goes all out on him, destroying everything around him. Teru continues to unleash his incredible power when Mob suddenly remembers a tragedy that happened between him and Ritsu...

After the incident with the religious organization (LOL), the evil spirit, Dimple, keeps following Mob around. Also, because of the incident, Mezato Ichi from the school paper starts following around Mob, as well. Then one day, another student joins the Body Improvement Club. Progress Towards Mob's Explosion: 45%

It's great that Mob joined the Body Improvement Club, but he suddenly faints as he's running along the riverside. His wish is to get stronger and to be able to get closer to his beloved Tsubomi-chan. One day, as Mob is feeling troubled, a woman with a strange mask approaches him... Progress toward Mob's explosion: 20%

The Telepathy Club is told that they are going to be shut down by the student council due to lack of members. It was then that one of the members, Inukawa, thought of possibly getting Mob to join. However, Mob gets a call from Reigen about taking care of an incident at Highso Girls' Academy...

Mob is finally pushed to his limit when he has to face Sakurai, Muraki, Matsuo and Ishiguro of the upper echelon. But then, he comes to a rather surprising decision...

Mob, Ritsu, and Teru are trapped in a room where they can't use their powers. And then, someone rather unexpected shows up in front of them: Mob's master and self-proclaimed psychic, Reigen. Somehow, Reigen is mistakenly thought as the boss of Claw, and easily manages to get inside and successfully saves Mob and the others. However, there is no way that Ishiguro would let them get away with this. As they try to escape the 7th Division, the upper echelon stands in their way.

Mob and Teru infiltrate the Claw's 7th Division to save Ritsu. Meanwhile, Ritsu tries to escape with the other esper kids and they run into the upper echelon and leader of the 7th Division. Teru and Dimple run into trouble after a strenuous battle, and the boss from Claw finally shows himself...

Psychics fight with supernatural phenomena that cannot be explained by science. Reigen Arataka that runs the Spirits and Such Consultation office is one of those psychics... well, a fake one. His only hope is a super dull middle-schooler named Kageyama Shigeo, a.k.a. Mob. 27% towards Mob's explosion.

The party makes their way to Arcanretia, a city known for it's recuperative hot springs! But what they don't know about the city might spell doom for their vacation.

Kazuma and Aqua can't properly accept rewards from quests due to their mediocre party lineup, and are so destitute that even keeping wood on the fire is difficult. Kazuma comes up with a plan and visits a magical accessories shop run by a woman called Wiz.

"I want money." After paying back the debt Aqua has racked up, Kazuma and Aqua's monetary situation grows even more dire. The party accepts a quest to kill helpless Snow Sprites and heads for the snowy mountains in order to escape from the stables during this winter so cold it freezes Kazuma's eyelashes solid.

Dullahan, a top leader in the Devil King's army, yet again appears at the city in a frenzied rage.

With debt looming over her, Aqua convinces Kazuma to accept a high difficulty quest to purify a lake, which doesn't require killing any monsters.

Darkness is back, but not to stay, if Kazuma and her father have anything to say about it.

A new discovery in a previously mapped out dungeon might be the first step toward Kazuma repaying his massive debt. Unfortunately for him, Aqua is determined to help.

Kazuma and Aqua meet Yunyun, a Crimson Demon girl who claims to be Megumin's rival. The feuding magic users then square off in a competition that could have ruinous repercussions for both of them.

Darkness, Aqua, and Megumin are back to continue their quest against the Devil King. Kazuma is back too, but the only adventures he has waiting for him exist within the criminal justice system.