Something I've noticed is that people think that Wilt and Blush (Adam's weapons) are a Katana and a rifle. However, while Blush is a rifle, Wilt is not a Katana. It's actually a weapon called a Chokutō, a really ancient type of sword that predates the Katana. Also, Adam's style of attacks, quickly slicing and then sheathing, is real style known as Iaijutsu. Pretty cool, right?
I don’t know anything about weapons, but this sounds pretty interesting.