You find Shuichi in the library, minding his business completely zoned out. You approach him and tap his shoulder, which makes him jolt up and turn to you

"AH! Oh, it's just you....sorry, I'm just kinda lost in thought since I've been on edge recently."

He seems uncomfortable and uneasy, but you couldn't blame him since you were a little nervous too. Not a lot, but still, you see where he's getting at