He twists his mouth at Krouse in a frown, looking a little like Mr. Aizawa just called him "problem child" again. Then he tilts his face towards the sky, or what passes for it. The rain is annoying, but it helps wash away the mud. Krouse is being annoying, but what he's saying isn't inaccurate.

"Thanks, Krouse-kun," he says, because it would be good for him to say it. "Of course I can't save everyone. Just the people I can, with what I have."

He asked All Might once, because he wanted to know if the man he thought of as a god could. All Might told him he couldn't, which makes logical sense. And yet Izuku did try, unable to let a single incident pass and losing sleep in the process. As soon as he woke up in the hospital, he made plans to leave it and UA.

He shouldn't have, and he ruminates on that as he walks into the city proper.