Indeed. While I haven't studied kendo personally, I have heard that there's quite a lot of damage that can be done with even just a wooden sword in a pinch.

[Now, as for hand-to-hand...]

Mm... I do know the very basics of self-defense. When I started acting as a detective in earnest, the police thought it prudent that I learn how to defend myself. It wouldn't do for their poster boy to get taken out easily.

But I would truly welcome your expertise. After all, it's best to have as many tools in one's toolbox as possible, don't you agree? I promise that I'm an excellent student.

[And, well, all of that is true, even if he's not getting into the details of any of it. He would like to learn enough to call himself proficient.]