Let's agree to disagree.

Even in real life, all abilities are born from will. And that's doubly true in One Piece, where you can stay pregnant for almost two years through sheer determination. But that doesn't mean you use Conviction for everything.

No one in the manga ever says that Zoro uses his swords so well thanks to his will, or that Nami drives an incredibly hard bargain thanks to her will, or that Sanji cooks a mean stew thanks to his will.

But it is said, explicitly, that Haki is the force of personality/will.

By the way, I would imagine that, if ever there was a roll for the two-years-pregnant thing ( ), Conviction definitely modified Endurance, there.

If you look at how Zoro acquires and improves his Haki, he does it all through swordsmanship. He became vastly better at Haki not by honing his will or his charisma or anything like that, but by training under the world's greatest swordsman.

That's an assumption. We don't know what Mihawk taught him and how.

I'm actually not sure whether Luffy can use haki through items. From a game rules perspective, though, I see no reason to prevent him from doing so.

And roll Weapons to do it?

Anyway, it just sounds wrong to me. It would be like saying that any wizard using a staff, rod, wand or any such foci to cast spells, would have to roll Weapons to do it. The magic comes from their Conviction, not from their stick or their ability to wield it. Or take an enchanted item, for example. You might wield your Force Stick with the Weapons skill, but the strength of its effect comes from Lore. (By the way, could I have just stumbled upon a good way to handle Haki? Through enchanted item slots?)

Arms haki could be Fists, Guns, Weapons, or Might. Observation haki could be Alertness or Investigation. Supreme king haki could be Intimidation.

I disagree. I see this from a pretty different perspective. If you want Haki, it needs to be based on Presence/Conviction. If you want the effects Haki gives you but under another skill, make a custom power with a different name and theme. Mechanically, they could be (virtually) the same, narratively they will differ.

I'm thinking that the hit-Logias part could be free, along with the tanking-attacks part.

So it downgrades Physical Immunity? Every Toughness Power of Devil Fruit users? And with "the tanking-attacks part", do you mean just having the option to roll Endurance, or would you make also applying armor free? 

HAKI OF THE SUPREME KING [-2]
Description: Whatever
Skills Affected: Presence, Conviction, Intimidation
Effects:
Something. As an action, you can make a mental attack against any number of targets within your line of sight. Use your skill - 3, they defend with their Conviction, Presence, or Discipline. Everyone rolls 0 automatically. Weapon rating is your skill. You can only target people once per scene.
Something else. You can maybe defend people from this Power somehow, since the Marineford battle didn't have all the mooks falling unconscious as I remember it.

I'm not sure I get it:

Luffy (or whoever) uses his Presence (or whatever) minus 3 without rolling it, that's the attack against the Presence (or whatever) skill value of the targets. Luffy's whole Presence (or whatever) is then applied as Weapon rating against whoever is hit.

Did I get it right?

I'm not sure about Something Else. I think it's reasonable that some mooks at Marineford would resist it on their own.

I'd say no. It obviously wasn't written with One Piece in mind, and I don't think it should be that easy to beat down Logia users.

That's just me, though.

No, no. I agree.

Anyway, it would be awesome to play a game set in the One Piece world. I think the DFRPG rules would fit it pretty well. Someone should set it up!

I don't want to give everyone Haki, and I don't want social skill to inherently carry combat awesome with it.

You don't have to give everyone Haki. You need to purchase a stunt to add a new trapping to a skill, so that's what would have to happen for a character to get Haki. 

I'm pretty sure that people have used Haki and completely failed to touch the Admirals.

In the sense that their attack still went through their incorporeal form? Or that they missed?

But that could be because the Admirals had "defence rolls" higher than the relevant "attack rolls", or because the Admirals have Haki-related "Powers" that provide Haki defence.

Or, if Haki does downgrade Toughness Powers, their resulting Mythic Toughness (plus the roll) was still enough to protect them effectively.

I suspect you're looking at the other Supernatural Martial Arts, because the one I meantis quite simple and couldn't be less costly: it's 1 Refresh.

That's the one I was looking at, actually. With costly, I meant in terms of stress. Yes, consequences are a thing, but still. As written, the power doesn't even allow mental/physical Toughness powers to help, and with how much Haki is throw around by New World users, I don't think you can justify it.

I could rephrase the Stunt as applying to people who share his convictions or are inimical to them. It's basically the same, effect-wise, but maybe it sounds more Conviction-y?

It still doesn't sit right with me, but better for sure.

Maybe.

Apart from piercing Devil Fruit defences, Armament Haki mostly just feels like a flavour for normal abilities.

I have Strength...because of Haki! I have Toughness...because of Haki! I have really high Weapons....because of Haki! And so on.

I guess it might be worth making the defence-piercing thing into a Power, but I'm not sure exactly how to do that. It's not absolute, so it doesn't just satisfy The Catch. There should be some kind of test, to see if your Haki is strong enough to trump a given defence. But how to represent that?

I'd say simply with Armor vs. Weapon rating based on Presence (or Conviction, although I think it fits less).

I don't think there ever was an instance where someone with Armament Haki active didn't manage to touch a Logia user, so I guess I would start with something like:

1. Haki downgrades the Toughness Power of a Devil Fruit user by one level (Immunity to Mythical, Mythical to Supernatural and so on).

Then I would probably treat it as Weapon rating:

2. Haki gives your attacks a Weapon rating equal to half your Presence skill value, rounded down.

Finally as Armor, with the caveat that you're not trying to dodge when you're using it that way (I can't remember anyone trying to dodge and still applying Haki to protect themselves):

3. You may decide to roll Endurance to defend yourself from a physical attack. If you do, Haki acts as Armor:X, where X is equal to half your Presence skill value, rounded down (maybe not halved? Or rounded up?).

It should probably come as a limited resource, though, both for balancing reasons and because it looks like you can "run out" of Armament Haki. But using Fate Points seems to be too limiting. Stress boxes, maybe?

I liked them all, especially the aspects. With Harry, there could be so many it's hard to narrow it down to just seven, but the ones you picked are nice. A couple of points, though:

Harry: You listed Scholarship twice. Also, Longtime Hero sounds weird under Conviction. Wouldn't it be better under Lore?

Law: do you think the "can't swim" factor should be handled simply as a compel of the aspect The Op-Op Fruit? Personally, I would use Limitation or Uncontrolled Power (and would with all Devil Fruit users).

Evocation is an option, but it doesn't really let him move people. Which is kind of key to his powerset, as I understand it.

He moves body-parts much more than whole people, but, either way, maybe grappling spells or something? Anyway, more than Evocation, I was thinking about Thaumaturgy, and you can move people with that.

And I dunno about Reality Marble. I guess I could use something like it, but it doesn't really handle the tricky parts of his powerset.

Demense seems totally unrelated to what he does, so I'm not sure what you're getting at there.

As I see it, the key thing for both would be the aspects Law has access to inside the Reality Marble/Demense (his Operating Room). When you can't figure out how to handle one of his actions mechanically, invoke for effect. Can it work for the tricky parts of his powerset you mentioned?

I appreciate the recommendation, but honestly it's very unlikely that I'll end up following it. I don't have a Playstation, don't play many video games, and don't really watch Let's Plays.

That's too bad. The story and the dialogue are just so good. Definitely the best I've ever seen in a videogame, although I don't play that many either.

Although I did read the Faith Erin Hicks comic. Which didn't have Joel in it, IIRC.

Probably not, considering it's a prequel revolving around the other main character of The Last of Us, at a point in time in which they had not met yet.

Anyway, the character sheet looks good. Just two comments on Stunts:

Bruising Strength looks a bit too strong. Compare it to Wrestler from Your Story.

Hmmm... Wrestler ("Gain +1 to your Might when maintaining a grapple") looks super weak, though, subpar even under the YS guidelines for making new stunts. Maintaining a grapple is a specific application of a trapping and is not exactly an attack roll. But I agree that Bruising Strength is too strong and doesn't follow the guidelines, either (only, the other way). What about just the "inflict a 2-stress hit on an opponent as a supplemental action during a grapple"? Could it even be upped to "inflict a 3-stress hit", since 1 is the base and a stunt can give a +2 bonus as weapon rating?

I Think I'll Just Stitch This... might make more sense if he could only use it to treat himself. I think it'd be fair to add in an extra benefit then, like a +2 bonus to those self-treatment rolls. Or maybe he can treat himself for all types of consequence, and gets +1 to his rolls.

Well, it would fit as far as the gameplay is concerned (you can't heal other characters during play), so it could be an option.

And yeah, I didn't really go for optimization. I just tried to stay as faithful to the game as I could, while not going overboard with refresh and skill points, which wouldn't fit his character anyway. He's not really a "super" guy.