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%.

Mob is challenged to a one-on-one fight with Black Vinegar Middle School's shadow leader, Teruki Hanazawa, 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...

Salt Middle School undergoes deep cleaning lead by the student council president, 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.

After defeating all of the gang leaders from the surrounding schools, Ritsu feels omnipotent. And then, he's confronted by none other than his older brother, Mob. Mob knew that Ritsu had wanted psychic powers for a while, so he congratulates him. However Ritsu doesn't greet his brother with kindness. Meanwhile, a mysterious man watches the brothers from a distance. He easily manages to grab Ritsu, and tries to drag him off. Mob activates his powers in order to save his brother.

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...

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 gets trapped inside a parallel world created by Mogami Keiji. Minori ends up transferring to his class, and Mob becomes the target of bullying. He can't ask anyone for help, and his negative emotions start to build inside. The truth behind the tragedy that Mogami went through when he was alive comes to light. Meanwhile, Reigen and the others were waiting for Mob to regain consciousness back at the Asagiri mansion. Dimple attempts to save Mob by infiltrating Minori's body.

Mob tries to save a child that is about to be run over by a car and is run over himself. People start to gather but Mob stays silent.