after the killing game was over the survivors were told that the whole thing was a simulation and everyone was safe. In order to recover and come to terms with the trauma they had gone through they were in a replica of the academy, still with no staff or other students that weren't in the killing game, the difference was that now they weren't trapped in there, they were free to go out whenever they wanted

Shuichi wandered around the hallways aimlessly. His expression was as stoic and blank