[For a while Kaz just watches the water, relishing the peace. There are a few questions on his mind, but he kind of wonders... He hadn't exactly been around when she arrived.]

Erm, so... Hikaru's your younger brother?

[It's genuine curiosity, mostly.]

I mean... If it's okay to ask.

[He pinks a little, so unsure how to start any conversation with her. After all, the first time they actually met he'd been hungover and massively trolled by Hikaru.]