[Katsuki’s attention snaps up from the book and something crosses his expression. A crack in the fascade. Suppression, Denki. That's the answer. Not thinking too hard about it. That's what he does with trauma.

Like how he casually dropped that he drowned as a child. As if it wasn't something that left him so afraid of large bodies of water that he never learned to swim.

After a moment his expression settles and he frowns, stooping to start gathering the dropped books. Mostly so Denki can't see his face.]

Keep it down, dammit. Yeah. People died. And came back. Not possessed as far as I know. And I dunno the details of how or why they did. I wasn't trying to be flippant.