Decay is Tomura's own Quirk, one that he was supposedly born with, and this allows him to "decay" anything he touches with his hands. This essentially means that what he's touching will crack apart and crumble away to dust, whether it's living, organic matter or inorganic. Tomura is able to control how far and deep the decay spreads, and if he wants, decay can be spread to multiple targets as long as there's a point of contact for its effects to travel from one to another. For example, it can travel through the ground and hit people who are standing in its area of effect; likewise, someone who chops off an affected limb can prevent Decay from reaching the rest of their body. At this canon point, Decay is very powerful and was shown to be capable of leveling a small city.
For the purposes of the game, I'm willing to have Decay be restrained by the resort: I'd like it if he could still affect fairly large structures (walls, doors, etc.) but perhaps have it unable to progress more than a few meters. I'm also cool with it if the resort would like to shut it off completely in certain locations or circumstances, so that there are places and things he can't Decay at all. I'd also like to have it still affect living beings, with player permission if it involves a PC of course.
The other Quirk he obtained through surgery is
All For One, a copy of his mentor's Quirk and all its stockpiled resources. All For One allows him to steal and grant other Quirks completely and permanently: if a Quirk is stolen, its original owner can no longer use it, and if a Quirk is granted, the new owner will be able to freely use it. This applies to All For One's user too, which means Tomura and his Sensei have access to any and all Quirks they've stolen. Because Quirks are sustained in the MHA universe by world-building aspects, my assumption is that All For One won't be able to steal other abilities or powers that aren't Quirks, though it probably would be able to grant a Quirk to someone without one. When applicable, any stealing/granting would be negotiated with respective players.
Because All For One has a ton of stockpiled Quirks, see the
wiki for an exhaustive list. Below are ones I think might be more relevant in RP.
+ Regeneration. What it says on the tin, basically allows him to heal from damage inflicted on his body. This can include severe maiming and burning, though there might be a limit to it if his head was chopped off or if he was burned to ash, but this is currently not concretely known.
+ Air Cannon. Can fire large blasts of pressurized air from the palms of his hands.
+ Search. Allows the user to "search" for up to 100 individuals at one time, as long as they've previously met. This Quirk will show the user the locations of their targets up to miles away.
+ Radio Waves. Allows him to jam radio waves.
+ Rivet Stab. Allows him to summon and wield thin, black blades of unknown matter. They are not free-floating—they come out from his hands and spine, but can grow or lengthen and change direction in the air.
Finally, in the same surgery as above, Tomura was granted superhuman abilities in speed and strength, so he can do stuff like punch really hard or jump really high, etc. It was also stated that the introduction of hundreds of new Quirks has essentially caused his body to go haywire, leading to some pretty gnarly situations where flesh and bone have grown uncontrollably, though it seems he was able to control it later on. I don't know if anyone would
want it, but I've considered keeping this possibility open for spicy purposes, but on the day-to-day, the resort can help him keep it together physically.
Most importantly,
I've been given mod permission to use All For One to give Quirks to other characters. Since All For One has a large stockpile of Quirks (which aren't always shown in canon until they're used), the ones that are given away will likely be made up. Tomura
would not do this extremely freely, and would not get rid of any Quirks that he finds useful. There will need to be a lot of IC relationship development, then I can talk to players OOC-ly about the powers their character might want and negotiate what they might be like.
OPT-IN (SEARCH)
Since everyone in game is contained to the resort, he'll most likely be able to find them with Search without restrictions, as far as distance goes. He'll most likely only use it with a purpose, not to troll or cockblock (unless you want me to..?), nor would he generally use it to recreationally spy on people. He may spy with a goal in mind. Feel free to assume it can be blocked with magic or other abilities. Without opting in, I will assume he cannot find your character.
your name: and preferred contact
your characters:
can he find your character(s) with Search? yes/no/sometimes/check with me (whatever specifications you want)
can he see your characters(') weakness? yes/no/sometimes/check with me/for sexy things (whatever specifications you want). if yes, feel free to list just one or a few (I won't use them all at once or I'll use them situationally) or just let me know to hit you up when applicable, I guess?
notes?
no subject
Characters: Rin Tohsaka (this journal)
can he find your character(s) with Search?
Yeah, go for it. Tohsaka is actually capable of something called "presence concealment" which makes her undetectable but since she hasn't run into any mages from her own world she wouldn't be actively using it unless trying to keep herself hidden from The House.
can he see your characters(') weakness?
The only thing I can think of that would stand out as a physical weakness (other than the fact that she's just a normal human outside of her magecraft) is probably her magic crest. While typically unnoticeable while inactive, the crest is "an archive of thaumaturgical capability." Basically spells and theories engraved into her body (specifically her left arm) that's handed down from generation to generation. It is described as an "artificial organ" and she has to take medicine routinely to keep her body from rejecting it/to suppress the near-constant pain it inflicts on her.
notes?
I'm sorry, I should have filled this out earlier.
no subject
your characters: Uchiha Sasuke (
can he find your character(s) with Search? Yes, depending on the context! I don't think he has any special abilities that would negate this... I think it could be fun to play with if Tomura ever wanted to find him, so I'm down if we wanted to work it into a thread. Sasuke would Super Not Like It because he's a ninja and he likes to stay hidden so that would be even funnier tbh.
can he see your characters(') weakness? Sasuke doesn't really have any physical weaknesses, but he could possibly pick up on emotional/mental ones? Sasuke is very emotional and can be manipulated through these emotions — but it might be less likely in GP based on his current character arc. I'm not sure if the Quirk would work that way, though. Or Tomura could pick up on his in-the-moment weaknesses, like some of his abilities cause physical pain... but he's tolerant to it. I'm happy to meta about those and have Tomura pick up on them if the thread evolves in that direction! OR... SEXY WEAKNESSES like horniness when Sasuke is aphro'd could absolutely come up whenever, no need to ask me first.
notes? None that I can think of!
no subject
your characters: Jin Bubaigawara
can he find your character(s) with Search? yes
can he see your characters(') weakness? yes
notes? tbh, he already knows Twice's weaknesses from canon. XD
no subject
your characters: Charlie
can he find your character(s) with Search? Yes
can he see your characters(') weakness? Yes
notes? Vampires have unsexy weaknesses of fire, decapitation, and total destruction of the heart. For more fun use of the ability, let me know in a tag when Shigaraki is using the ability and I'll fill in with some thread-specific physical or emotional context!
no subject
your characters: Sakura Matou
can he find your character(s) with Search? go for it; despite being a mage, Sakura has no proper training and thus couldn’t avoid being found even if she tried. Also, while I’m not familiar with the mechanics of Search and its relation to magic, Sakura is from a canonpoint where she is carrying a lot of magical energy - like nuclear bomb levels. So she might be less of a glowing point and more like a nuke. I figured I’d mention it for potential shenanigans.
can he see your characters(') weakness? similar to Rin, I’m cool with Tomura seeing Sakura’s crest. It’s a nasty piece of work though, tied up in parts of her nervous system, her heart, and suggesting she’s used to intense pain. So I suppose the “weakness” is that should it stimulate her nervous system, she’s gonna fold like a house of cards.
notes? Nope, I think that covers everything!