[Even if he wanted to not notice it, his brain is very much going to obsess over the way he sees Shiro's eyes shift down to his mouth, hanging on it without any shred of understand just like he does for how Shiro sounds as he starts to speak. Is he...
That is, until he falls forward and almost gives Keith a heart attack in more ways than one.]
Shiro?! [Keith tries to shift up to see what happened, didn't quite notice the branch, his eyes wide with concern over anything else now. asdlfkjsd?] Wh-- Are you okay?