Noctis blinked, having not expected that reaction before it clicked in his head. Right. The eye thing. He'd hoped that him calling out Prom's name would have been enough, but... guess not.

"Sorry. Kinda can't help it," he said with a shrug, before grabbing a towel and moved to help clean up the mess he caused. Which he could see perfectly fine in the low light. This is going to take some getting used to, regardless of the usefulness. And true, he could have switched to Ninja; but then he'd more than likely stumble over the kitchen table or something.

He held up the mostly empty glass to Prompto, the amused glint in his smirk fading in the process. "Couldn't sleep either, huh." It wasn't a question. More an admittance than anything.