Re: One piece 686
Defense/attack haki? Where'd you get that from?
From what I can remember, there's Observation + Armament + Conqueror's. Observation is like Enel's Mantra, i.e. you essentially have precognitive abilities and you can sense things/people/attacks/etc. Both Zoro and Sanji have shown this (for example when Caribou stole the treasure in FI, Luffy asked them both if they could feel a presence). Armament haki essentially gives you the ability to coat your body with haki. So it can be used for defense (i.e. if you coat yourself with it when you're about to get attacked, for example when Luffy mentioned that his CoA haki wasn't good enough for piercing attacks like Hody's teeth) or for attack (i.e. you coat yourself with it to hit harder, sharper, etc, for example, Luffy's elephant gun against Noah). In the case of Logia's, Armament haki essentially forces their bodies to become tangible.
I think what we'll find out is that Zoro probably underwent some kind of moral/ethical change relating to something to do with his childhood friend and Perona during his training and now he doesn't like fighting women. Hawkeye might even have something similar which is why Zoro took it on.