I think you'll find humor like that is a bit tasteless in the current situation.

[Kira looks even more vexed at Kaito's appearance. He strikes him as a noisy punk, exactly the sort he's rapidly become tired of dealing with over the past few months of his life. Could he be the one who did this, with that lackadaisical attitude? No one has looked for evidence yet but it would be really vindicating.... he lets the brief annoyance pass and sighs.]

Of course... what I mean is that someone is already threatening our peaceful existence here. I just got here though, haven't gone in to be sure they're not simply playing an even worse prank.