[Kazuma pauses further--in his preoccupation he really hadn't realized she was there, which is a bit embarrassing--before he slides the katana back in its sheath with a sigh.

He really does need to tell her, before they go further with this. She deserves to know what she's getting into, and it doesn't need to be a big deal. She won't even be the first person to know, and it's not like it's anything to be ashamed of, but having to volunteer something about himself always feels like something is being taken from him.

But he isn't a coward, and this has to be done. And with that resolve in mind, he turns to her fully.]

Okumura. I may owe you an apology. I haven't been entirely honest with you.

[He pinches the bridge of his nose. Here we go.]

I have... almost complete amnesia of my life before I arrived here. [In Hell.] I can use a sword, but I don't remember learning it, and because of that, I'm not sure how well I will be able to teach it. I understand if you would prefer to find a more reliable instructor.