Well, maybe. Let that idea simmer in his brain for a while, and you might be surprised by the results.

The current results might be just as surprising, when placed out as plainly as Kai was laying them down. "Well, yeah," he rumbled, as if this were a completely obvious thing of him to do, "I don't want you to get cold, y'know?" Specifically you, Shinji.

His own function as a very toasty pillow was vaguely noted, but he wasn't going to make any assumptions that Shinji wanted to get all his warmth from Kai's chest or anything. It'd made him feel a little pleasantly funny back in the tent, but feeling sick was a hell of a ride?