"They're empty?" Skyfire looks a bit disappointed and a touch confused. "Why would they have so many books with nothing in them? That's rather disappointing." He really hadn't had too much of a chance to look through the books as he'd only gotten his tools back after that whole mess with the pumpkins. To find out that while he now had the ability to look through them, that there was nothing to read caused him to sigh a bit.

Listening to Tsukishima's explanation makes Skyfire curious. A cavern might have things he needs, or at the very least he hoped he could move around enough to figure out his spacial awareness without worrying about wrecking a wall. "Well, I wouldn't mind going with you if you think I'd be more help than hindrance with my size... Maybe if I'm lucky I would be able to find some sort of mineral deposit or metal scraps at the same time."