"You mean the Kuro-whatever-he-happens-to-think-of stuff? Or just pet names? Because both tend to happen, yeah. Though I do my best to keep swords, or any other weapons out of it." He doesn't say anything about the chasing though. Because that does have a tendency to happen occasionally.
"Chasing you with a sword for something as petty as a nickname seems a bit excessive to me. Not to mention dangerous. Aren't you worried you're going to end up hurt one day?" He knows that it's probably rude, not to mention tactless, to just put it out there like that but it's something that's been worrying him for months and he doesn't know how else to do it. He looks genuinely concerned though, and a little bit like a puppy who knows it's done something it shouldn't, so hopefully Fai won't take too much offence.
AND NOTHING HURT except everyone's brains
"Chasing you with a sword for something as petty as a nickname seems a bit excessive to me. Not to mention dangerous. Aren't you worried you're going to end up hurt one day?" He knows that it's probably rude, not to mention tactless, to just put it out there like that but it's something that's been worrying him for months and he doesn't know how else to do it. He looks genuinely concerned though, and a little bit like a puppy who knows it's done something it shouldn't, so hopefully Fai won't take too much offence.