Location from My Hero Academia by Kohei Horikoshi
A massive enclosed training facility within U.A. containing multiple disaster simulation zones. Designed by the space hero Thirteen for rescue training. The site of the League of Villains' first attack on U.A. students.
The USJ was built to simulate every disaster scenario a rescue hero might face. Its sheer scale makes it feel like stepping into another world. When Kurogiri warped the League of Villains inside, the training facility became a real battlefield — students scattered across zones fighting for survival. The attack shattered U.A.'s sense of invulnerability and marked Class 1-A's violent introduction to the reality of heroism.
An enormous domed structure the size of a theme park. Inside, distinct biome zones radiate from a central plaza — a flood zone with a shipwreck, a mountain landslide zone, a fire zone with burning buildings, a downpour zone, and a collapsed urban zone. The central fountain plaza connects all zones under the massive dome ceiling.
Also known as: USJ, Unforeseen Simulation Joint, The USJ