Misuzu Togashi

All Might and Deku accept an invitation to go abroad to a floating and mobile manmade city, called 'I-Island', where they research quirks as well as hero supplemental items at the special 'I-Expo' convention that is currently being held on the island. During that time, suddenly, despite an iron wall of security surrounding the island, the system is breached by a villain, and the only ones able to stop him are the students of Class 1-A.

Shintarou Kisaragi—a NEET who shut himself inside his room for 2 years—has been living his life normally until he met a cyber girl named Ene, who appeared in his computer screen when someone anonymously sent him a mysterious e-mail one year ago. One day, Ene had been messing with Shintaro's PC, which causes him have to go to the outside world for first time in two years.

After performing a huge concert, Miku Izayoi invited Shido, Tohka and everyone for a day at a reserved indoor pool. Later at night, Shido keeps spotting a girl named Mayuri, who quickly disappeared after seeing her.

The Second is dead and the Gasai Yuno in the third world finally gets to live a happy life with her loving parents and friends from school. But there is still an empty place in her heart — it seems she has forgotten a person really close to her but simply cannot regain her memories...