[He's thinking on this. He knows what she's really asking, but he'll answer the obvious question first.]

That's what shisho thinks, I think, when I'm with Hikaru. Or any of his kids, actually. Perhaps I should ask tips from you on how to be a big brother to Hikaru. [He laughs, meaning it.]

I don't know... I'm afraid I might not be the brother my sister needs, when the time comes. It's been so long, and I don't know her at all.

[A pause, then a sigh.]

I don't doubt that I love her, though. That's weird, isn't it? I don't even have a clue who she is now. But I do anyway.