Typically, when humans enter the TV world- I suppose you could call it Inaba's version of the Metaverse- their repressed feelings separate their Shadow, and in many cases, an entire dungeon will form around them. Think palaces but with the randomness of Mementos.

[Two more shots. His voice is level, at least, and his expression calm.]

The culprit in the Inaba serial murders would have people who appeared in the local media thrust into the TV world, where they would surely perish, were it not for our efforts to save them. But they all had to face their Shadows, and we were there to protect them when acceptance proved too difficult.