If there is one field in which Mari is wholly unparalleled, it's teasing. She has elevated it to a horrible, merciless art form; the irregularity of her kisses has Dia's nerves standing on end with damnable ease, and when she closes in on her mouth, she feels her own lips tremble.

But-- no. The contact's never made. Dia's left unwittingly mimicking a fish out of water for a solid second before she clues on to the punch line -- or rather, that the punchline is her -- and promptly snaps her jaw shut, heat spreading across her cheeks like a forest fire.

"Immature," she mumbles with a sharp turn of her head. That she only ends up presenting her ear to Mari's mouth-- that's an unintended side effect.