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%.

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 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 is in a great mood because he got to talk to Tsubomi for the first time in a while. As he's walking through town, he feels the stares of other girls...

Kurata Tome has always dreamed about communicating with the universe through telepathy, and now, her high school graduation was drawing nearer. When they are about to start winter break, she tells the Telepathy Club that she is going to disband them.

Mob continues down his path of destruction. Amongst all of the destruction and chaos, Reigen finally reaches Mob with the help of Serizawa, and he desperately tries to talk to him.