Louis is usually the last to leave, since he's pretty much taken responsibility for the music room. Still, he knows that Nagisa will be here tonight, so he's not surprised to hear or see him playing. Not to mention the thing that's apparently going to happen tonight. Louis has his phone with him as he enters the room, checking the countdown again and again. He holds out the notebook he usually carries with him.

So, did that app give you any more hints about what's going to happen tonight?