Although Lavi's oblivious to their particular circumstances, he's very familiar with the effects war had on people and so Caesar's reaction, that tense readiness for something awful to be going down as he's startled awake didn't surprise him in the least. He'd seen it many times before, in the many places he has wandered through and more recently and prevalently, during his time in the Black Order. Both Exorcists and Finders alike, those who had been on the battlefield, tended to share that tenseness. Lavi was no different, generally speaking, so he didn't bat an eye at that reaction.

"That's too bad for you." He grinned cheekily at the cuter remark, entirely unaware that Collette had been the one person he hadn't told about his temporary condition. In all the chaos of arriving here and getting sick, it had slipped his mind. Not to mention he'd complained to plenty of people and thus he just assumed she'd been one of them.

"Then basically it's a play that's been recorded? That's amazing!" He handed the tablet over eagerly when she gestured for it, shifting a bit to make himself more comfortable on the bed while keeping his eye on what she was doing on the tablet. It didn't make much sense to him, not being as tech-savvy (yet but it was something he wanted to work on), so it looked impressive to him all the same.

"Redheads are the best after all!" He quipped with some obvious pride about his hair before addressing Caesar. "You can try it if ya want. It's a little too easy though."