Yeah, I'm well aware that the fighting style is mostly fictional, but Setsuka isn't the one who first used it. It's a very popular style within most of japanese culture, and one that my own character uses in multiple stories I've created. As for the 'iaido' term I used earlier, it's possible that it was a typo from where I found it, but that's the term I found. 'Iaijutsu/iaido' is a term usually referring to the technique of killing the enemy in the same motion that you draw the sword.
Also, in a few samurai games I play, one of which I specialize in, keeping the sword sheathed and then using a fast draw slash against the enemy at the perfect opening to cause instant death is a very useful technique I fight with.
Of course, Yoshimitsu's moves are more fictional then Setsuka's, by far.
Also, I agree about the comments concerning Cervantes, in fact I find him one of the easiest characters to beat, especially when people use him online because they just spam the special moves, but I still find them rather annoying.