[Oona hums in acknowledgment. Sure, she can understand that, being from such a long-lived species herself.

So, with that curiosity sated, Oona moves on to the next topic.] Will you swim with me now, Kaoru? Or at least soon, before water disappears? [Her smile is quick and wicked]

Promise, I will not drown you! Made promise to someone else that I would stop that. [How... How reassuring.]