Katsuki blinked in response, confused by her answer. "No, huh?" Had he simply spaced out so much that he hadn't noticed the stranger enter with him? It wouldn't have been the first time. He leaned towards the window, unphased by the height.
"Well, either way, something's up." The alignment wasn't right for any of the cars to be perched at the top, making it a very odd position to be stuck in. "I'm gonna go down there and figure out what's going on."
His crimson eyes shifted back over to her, still trying to deduce what the expression was. It took noticing the white-knuckled grip on her hands to put it together: she was scared. Katsuki's smile returned, bright and welcoming as a morning sunrise. "Hey, you're gonna be okay. I won't let anything bad happen to the people here, including you."
He didn't just mean it, he fully believed in his capacity to save the people stuck here. Fighting and flying and Heroics were his bread and butter. As long as he put his mind to it, nothing was impossible. Noting that his palms might be sweaty to the touch, he quickly wiped them off against his pants before offering one to Amano. "You wanna head down there with me? Bet it's safer down there than up here right now."