I love this part, okay? Where the Gladiator is running at Shiro and he freezes because in that moment he has a flashback and he finds that he can’t move.
And Keith knows. He doesn’t know exactly what Shiro’s been through, but he knows it’s a lot. Shiro doesn’t even get hit, Keith is the one who’s crossed swords with the Gladiator and yet Keith is worrying about Shiro because he knows, that whatever happened it him is enough to make him hesitate, when he never hesitates. Keith had already been knocked over and could have just let Shiro fight alone for a moment. He must know that they aren’t going to defeat this thing with just the two of them. But he still runs to Shiro’s side, not because he’s worried about Shiro’s physical well-being, but because he’s worried about his mental state.