"Aww, but those are the best part," Rin teases, poking lightly at Haruka's tail fin to prove his point.

Though he is a little surprised that Haruka is so wholly convinced he wouldn't harm him, given his species. Even if they're... friends, more or less. They've never really been in a situation where the other couldn't make a quit escape, should things get to tense. Not that either of them needed it, but, you know, just in case.