USJ, Unforeseen Simulation Joint (不測のシミュレーションジョイント,Fusoku no shimyurēshonjointo?, literally meaning "The Room of False Disasters and Accidents"), created by the HeroThirteen, is the training area where the U.A. students train their rescue abilities, as such the area can simulate all kinds of accidents and disasters.
The area is made up of sections which have different environmental factors.
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