"They just want to thank you. You did help save the world."

Despite the smile and (attempted) upbeatness of her voice, Mizuki can't hide the relief at seeing he made it out of the storm in her eyes. Not after the week of worry for everyone in said storm, given she ended up sitting out of helping. Not from lack of trying, but pure fear on her part.

Also, it seems she's been given a few free shirts herself despite not helping. "... Was it as bad it looks, or worse?"