Class 1-A visits Nabu Island where they finally get to do some real hero work. The place is so peaceful that it feels like a vacation until they're attacked by a villain with an unfathomable Quirk! With All Might retired and citizens' lives on the line, there's no time for questions. Deku and his friends are the next generation of heroes, and they're the island's only hope.

Kenji is your typical teenage misfit. He's good at math, bad with girls, and spends most of his time hanging out in the all-powerful, online community known as OZ. His second life is the only life he has--until the girl of his dreams, Natsuki, hijacks him for a starring role as a fake fiancé at her family reunion. Things only get stranger from there. A late-night email containing a cryptic mathematic riddle leads to the unleashing of a rogue AI intent...