[To take up time. Although it would be true to say that he's not entirely used to having straight up free time, it can also to some degree be the opposite. He's gone a while without piloting before, although he still kept up with things and spent a good amount of time at Alvis. At other times, it could feel like he barely was able to get enough sleep.
It'll be different, here. In more than just a few ways. Like Soushi, he does know that this isn't anywhere to settle, in any sense of the word. They truly are trapped. It doesn't matter just how much he's embracing the fact that he's able to be by his best friend again. Kazuki knows that all of this isn't forever, so he shouldn't treat it that way.]
I want to see all of what there is to do, and hopefully learn more from the others.
[There has to be at least some positive news to learn . . . Right?]
Sorry. . .
[He just looks kind of embarrassed again with that remark. Because it's beyond true. ]