I'm fine. [That's more to Sunny than the Ferryman, though the Ferryman had maybe looked a little concerned when they pulled him out of the River, so maybe it isn't entirely not to the Ferryman.] I'd be happy to help again if you need it! [Though maybe he'd bring some towels with him next time...] Most of what I experienced was violent. Is that relevant? Or could you tell when it was happening?

[He's not entirely sure how far the Ferryman's knowledge of what's happening in the River extends.

As far as Nagito actually being fine or not, he's maybe a touch too cheerful, leaning a little toward mania. Still, it's only a little, and he'll calm down eventually.]