In a monster-ravaged apocalypse, everyone awakens an Ultraman System.
The protagonist, Yu Fei, was just a high school senior who got dragged into a world of trials while dozing off in class.
Aside from the fact that nobody here knows about Ultraman, this world is identical to reality.
When he opens his eyes again, the city outside his window has already become a monster-infested wasteland.
Everyone else awakens as Ultraman Zero, Tiga, or Belial.
The good news is that the protagonist awakens as Nexus. The bad news is that he's only 12 meters tall.
