[He was 100% about to protest but stops himself enough to let Shiro breathe, let him work through the words and the sense of their past as much as the here and now that has settled over the conversation. As he listens, a part of him progressively feels more winded, like something in his chest isn't quite lodged right, all the way up into his throat, and none of it truly in a bad way. He swears he can hear his own heartbeat echo in his ears.]
[Keith drops his head, looking to the side in a way that has his cheek pressed against Shiro's forehead as he still rests on Keith's shoulder. Keith's not quite looking away but at the same time is, briefly hiding how his face probably looked lopsided at best. You can't just--]
Shiro... [Keith's arm squeezes around him a little, hold him and closing his eyes, barely speaking above a whisper now. Jesus christ.] I believe that. Maybe once, I don't know if I could have understood it completely. But I know. We... changed each other's lives.