[That is probably the first spark of any feeling besides grief and overwhelming rage that he has felt since the last moment with Hayato. It's concern, because as broken as he might be she is his friend and clearly in some situation.]

What I need and what I have to do are different; if you're in trouble, I can help. I--can't lose anyone else.

[There's a soft sigh, and Yamamoto leans against the wall in the space he is taking a break for a moment in. This may be as good as holing up gets, quick pauses before the next battle.]

I know...but I have to think about after this or more people are going to die.

[There it is, he can feel the battle mode seep back into his blood because if nothing else, he still has friends to save.]