Kira practically reads him the riot act, even if it's in a kind and gentle fashion, and Credence finds himself actually smiling. Sure, it's a nervous smile, and he definitely doesn't want to do this at all, but he can somehow never say no to Kira.

"I'm very fond of button-downs and books, Kira." he tries his best to sound admonishing and not slightly hurt, but he carefully picks his way down towards where Kira is, looking down at his own shirt, and then the water, and then the other's face, as if searching for something.

"You promise you won't laugh?"