New Quirk Name: Gravity Links

This Emitter type Quirk allows the user to make starry, floating whips from their body. The user can move these whips like they were part of their own body and extend them out over medium ranges. When wrapping these whips around something, it will begin to lower the effects of gravity on it and make it lighter. The more the whips wrap around something, the lighter it becomes, to the point it will begin to float. The user can then move the target around with the whips. At their most potent, the whips can remove thirty pounds each and the user can make dozens of them at a time. This gives the user a versatile Quirk, able to lift and move whatever is around them to their advantage. They can make themselves lighter to fly around, make enemies more vulnerable in zero gravity, carefully lift and move heavy objects, toss around items then suddenly make them heavier, or just keep the tendrils around for cool special effects. Though these whips can still be destroyed, weakening their hold over what they are trying to move. Moving the whips is rather light and slow, making them easier to avoid. The user needs to keep up with light, happy thoughts in order to make and control the whips. Distress and depression will start hampering their hold and the whips’ power.

I’m not focusing on any sort of thematic through line for this or connecting it to the themes of the story like how Tomura was. Because you’d have to rewrite Overhaul from the ground up to make it work and basically make him a whole new character. And I also won’t have it so he’s the successor of All For One. Because that’s the most obvious route to go and I think it’s more interesting to tackle how he’d be with his current abilities.

You could also have him gathering other distinct elements from the underworld. Various gangs that sprang up in the wake of the LOV or individuals that don’t label themselves as villains. You could even have him gather individual villains, either through charisma or force. Then have him take on some of the bigger groups, such as the MLA, and take their people and resources under his purview. He could bring them in under the various rules and disciplines of proper yakuza. Kind of like what he did with the LOV, but successful.  It’s that threat of villains getting more organized, only now done at an unimaginable scale with Kai at the helm. A true revival of the yakuza now having a strangle hold over Japan.

If you really want to get crazy with it, imagine if he was able to get his hands on the bodies of Nomus after the heroes beat them and studied them. I don’t think it’d be realistic for him to replicate Garaki’s work. Still, he could easily take bits and pieces of the Nomu and reincorporate them into something else. Maybe even try to get them working again with his power and the right pieces. If nothing else, he can certainly take inspiration from it. Because, with “Overhaul”, Kai could always create his own monsters. He could always fuse people with various objects, animals, or even each other. All to make weak trash even stronger. For every hero, there would be a dozen thugs that could be made into something useful.

As for personal power, I honestly don’t think you’d need to rewrite him much. Kai is already fiercely intelligent, has saint-like charisma, and wields one of the most powerful Quirks in the series. We already saw that Kai could fuse himself with others to gain a tremendous boost in size and power. You could just keep having him doing that with whatever other character you’d want, however many times you want. And boom, you got yourself an endgame villain in the making. And with the Quirk Destroying Bullets, he could easily act as an entity that threatens the very fabric of society by robbing people of their Quirks. You may have to adjust his character some. Maybe emphasize more of how he’s rebuilding villain society into something better, more powerful. How everyone looks up to him and wants to fight by his side, like a twisted version of what Izuku achieves in the end.

Maybe? I think that Jiro has a lot of potential in terms of support equipment. However, I do not think her Quirk is strong enough to support some of the more extreme ideas that people may have. Like, I don’t think that she could glide or make barriers with the right equipment because the sounds she makes aren’t that powerful. They aren’t the main feature of her Quirk. It makes more sense to stick to more subtle uses of her vibrations. For example, I think that she could plug her jacks into something like a baton or a sword. She could then amplify the power of that weapon with her vibrations, giving it more force or cutting power. She could have a gun with various dials on it that lets her adjust the sounds she makes. That could give her more unique and controlled ways to use her sound over a distance and what effects it can have on people. I think she could have small devices around that give her new ways to use her vibrations, like a small radar that lets her use her sound waves like a sonar. This could give her a better understanding of what is around her and let her map out the area. She could plug into little dishes that can let her hear over long distances or pick up on frequencies she can’t normally hear.

So when it comes to picking out Quirks to replace the ones in “One For All”, I’ve already done a full list of options before. I still believe those are some of the best Quirks for “One For All” and Izuku. And if I were to pick out ones from that list to replace these, I would think that “Gyrate” and “Crystallization” might be two of the best options. Because to me, there still needs to be some more combat-oriented powers in his kit. The four other Quirks are already pretty heavily support-based. It’s just that “Gearshift” and “Fa Jin” do it in the most boring way possible by just expanding more on his physical abilities. With those two, they can at least expand on what Izuku is capable of with it just boiling down a stat boost. Especially after they have been boosted. “Gyrate” could give him whole new applications for his physical abilities with his spinning body, while “Crystallization” could grant him whole new ways to fight people by growing out giant crystals everywhere.

For the sake of this, I’m sticking with Quirks whose main gimmick is granting flight or is heavily focused on flying. No animal Quirks either, like “Falcon” or “Dragonfly”.

We’ve got “Fly” to grant you angelic wings to fly and “Fair Feather” for real angel wings. “Lift Off” grants a high tech jet pack and “Thruster” turns the user’s legs into a rocket ship. “Hide Wings” can grant some camouflage with their wings and “Flame Wing” can throw balls of fire from their jets. “Bright Flight” uses the power of the uses light to fly. “Shooting Star” makes for a spacey hover board. “Ride Along” can let the user turn anything into a flying object. Finally, there is “Exertion”, which is about as close as you can get to a traditional, comic book flying ability.

New Quirk Name: Cutter Wind

This Emitter type Quirk allows the user to make small, two-foot blades from both of their forearms. The user is able to move their breath from their body and out of their blades. This empowers the effects of the air passing through them and makes for short, but powerful bursts able to cut bricks. The user can manipulate these effects through moving around their blades, such as thrusting the blade forward to dash or swinging them around to make a cutting tornado. This gives the user a good mix of offense and mobility, able to unleash powerful bursts of speed and cutting power as they wish. They can dash around an area, cut at foes from afar, slash at attacks before they land, destroy the terrain in order to get around, or just stab someone normally. Though this does require the user to have control over their breathing in order to manipulate the blade. The usage of their Quirk is limit to the arms, making them obvious targets.

I see it working as an Emitter type Quirk that allows the user to put themselves into a deeper mental space. The user can then set orders for themselves for their body to work through. The user can input specific commands and actions for them to work through, similar to programing. The body will then work through these to the best of its abilities, such as going to fetch keys or fight people for the user. This can even set up fail safes if they wish, such as specific instances happening. The user can assert control over themselves once the task is over or at any point. This gives the user a good mix of options, capable of commanding themselves to act in the most efficient ways possible. They can complete tasks for the user, execute a precise plan for them, set up physical fail safes for themselves, counteract Quirks that try to influence their mind or emotions, or just help them get through boring tasks easier. Though this does require the user to give up control over themselves and to plan ahead to make it work. Returning to their body can be harrowing and requires some readjustment, especially if the user does this for a long period of time, leaving them open. The user can come across as rather robotic in this state. A possible name for the Quirk could be “Auto Pilot”.

So I think there is something to this idea, but it needs some work. For one, I think it’s kind of confusing for this to apply to objects. Wouldn’t it make more sense for this to apply to people instead? Like the user is spreading out injuries to others and doing that heals them? I just think it’d be cleaner concept and would help balance out the Quirk more. Because as it is, the user can just touch whatever is around them and heal themselves instantly. Sure, the stamina drawback can be an issue, but something like stamina is an easy to build up and a very expendable resource by comparison. By having it apply to people, there’s a lot more risk at play, especially if the user doesn’t have anyone close by to use it with. Though you could focus more on the damaging part of it. Maybe instead of healing the user, it lets them make this energy. The energy can help fill up injuries, but it’s real purpose is to mess up whomever hurt the user. The more hurt they are, the more potent the energy becomes and could have that destructive cracking you mentioned. That could fit in with the name and the user getting payback on someone who has hurt them. And it has the natural downside of the user needing to get hurt to use it.

I also forgot to mention that the quirk “Condense” quite relies on the user having a calm or relaxed mind in order to use the Quirks power (as another weakness).

I don’t really get what it changes the user’s looks. If it’s so minor, why even include it? How does that even relate to the God Form?

I think there is something in this idea, but it needs some revisions. For starters, you really need to give some clarifications on how strong the user can get with this. There isn’t much to go off with just this. There should be an example of what the user can break, like they can break wood, bricks, concrete, or steel. It doesn’t need to be specific. Just something that gives an idea of how powerful the Quirk makes the user so you can balance it out with the downsides. Speaking of the downsides, I’m not sure about having both of those as a drawback. The user needing to remain calm for a combat focused Quirk is already a lot to ask of someone. Depending on how strong you make them, that can balance the Quirk in and of itself. Maybe if the stamina downside was less notable, with the emotional focus of the Quirk being the main issue of it. Like it takes some stamina, but the user getting emotional is what makes the stamina drain faster as they lose control.

Yeah, that really can’t work. I can’t exactly see an ability that lets the user trap other people in works of fiction fitting within MHA. It’s way too strong. Maybe you could have something that can project it outwards as an illusion, like the user touches a book and they can recrate what’s in it, but that doesn’t really fit with the concept. The closest I think you could get to that is the user sharing some illusionary space with people, like what I did with “Headspace”. Then the user takes inspiration from things they read or watch for their illusions.