And their mother isn’t the only one who’s worried. It’s not often they get to have a day like this one—with both their parents able to take the day off from the vet clinic. It feels strange, almost, being a family of four instead of two. Or three, in the midst of the crowd. Ren had spent most of the day with them, though had wandered off occasionally. He had spent the last hour elsewhere, only rejoining the family once the fireworks had all ready started—though they hadn’t been going for long—an ache growing behind his eyes, though he hides the pain better than his sibling, pushing it away.

While their mother kneels down to take his temperature, Ren frowns.

“You sure?" He's not sure he believes it. "Not another one of those headaches, is it?”