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kunstkombi · 24 days

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MP100 Fallout AU

I wrote down some headcanons for this AU (& others) in February & well, come April there's suddenly a Fallout TV series? (& there are Magic the Gathering Fallout cards since earlier this year, too??) Well Fallout brainrot is revived, here's long-ass worldbuilding/background ramblings.

Vault Tec & Claw

Claw existed before the Great War as an organization researching psychic abilities; though in this universe powers initially don't nearly reach the levels of MP100 canon

Toichiro & his wife start working with Vault Tec overseas & are assigned Vault 100, that is just being constructed

They are to conduct experiments with FEV-variants on promising psychics to try & enhance their abilities by new means the vaults offer in the future

Mob is born in 2058

Several years later Toichiro starts to "collect" mostly young espers to populate the vault with; of course the plan of direct & experimentation with yet unknown risks is left out

Parents of the kids he's interested in are offered contracts that promise a safe place for them to survive with the downside of being taken away to 'monitor', but the desperation over the worsening state of the world makes it easy to agree

The Kageyamas even beg for them to take both their sons, not only the one with some innate abilities - and succeed

Toichiro's wife leaves him over the increasingly unethical plans for the vault, but to her dismay their own son stays with his father

Vault Occupancy

In 2072 the contracts take effect & Vault 100 is populated and sealed (with mostly kids from JP & USA families)

Toichiro & the Ultimate 5 are in charge and oversee the vault and experiments

For about two years the vault is operated with its young residents living a pretty standard vault life, they have restricted permission to be in contact with their families

As the experiments so far show no effect & the young population is getting harder to control, the decision is made to make them enter cryosleep early & continue with different lines of experimentation while in this state

In 2074 all residents except the six in charge enter cryosleep, including Toichiro's own son

Correspondence with parents of the kids is fabricated from here on

Many of the kids die in the next few years while supplemented with barely tested substances to increase their affinities

In 2077 on the day of the Great War, Toichiro & the Ultimate 5 enter cryosleep themselves, joining their own experiments as subjects now that the fatality rates have reached 0 & brain scans look promising

They set their own systems to awake at a scheduled point in the future

Post-Apocalypse

It goes as planned; the 6 of them wake up & find themselves enhanced with never before seen psychic powers, marking their final experiments a success

Vault 100 is unsealed & Toichiro wakes only Sho from the remaining children, to take him with him

Sho is initially too weak to fight back but doesn't take to it kindly; as soon as he is able he goes back

He wakes Ritsu first, of course

Together they start waking the remaining kids - some of them, including Ritsu, don't seem to see any changes in their abilities, several of them are incredibly disoriented

However, Mob's cryopod malfunctions and won't release him - they could break it, but can't guarantee his survival should they forcibly remove him

They can only try to look for someone to help, so even if Ritsu has a hard time leaving he and Sho start their wasteland journey with that mission, while Teru stays back to watch over the others and Mob

Unfortunately Toichirou comes back in search of Sho and they are forced to flee, leaving Mob unattended

Reigen & Mob

Not too long after everyone's gone, Reigen instead finds the vault - it looks newly opened which could promise a fortune (& he isn't so wrong about that)

Despite, or because, not knowing what he's doing, he ends up accidentally releasing the single kid left

Mob is fine but overwhelmed & immediately starts frantically looking for Ritsu

Reigen's words don't get through to Mob - he gets some reaction when he talks to him in Japanese, but ultimate can just follow while Mob scours the whole vault

Soon he gets a showcase of Mob's new powers & in their strongest form, while Mob reaches 100% despair

In the explosion, most of the vault is destroyed

Reigen is shocked but fascinated and he stays with Mob and calms him

His initial plan to bring the kid somewhere safe asap change with the idea of taking him with him to profit from these powers - Reigen himself is not the strongest & survives mainly on charisma & luck out there

Reigen lies to him about knowing more than he does & possibly being able to help him find his brother

Throughout Mob's traumatic awakening into an entirely unknown world alone Reigen is his only company & guidance, so Mob trusts him quickly - & Reigen gets attached quickly

Reigen continues lying but his own gains aside, he soon genuinely tries to help Mob find Ritsu as well as the truth

Somewhere along on their journey they meet Dimple, an intelligent super mutant & he tags along, initially also out of interest in Mob's powers

#i have not decided yet in which year their awaking is set #mp100 #mob psycho 100 #reigen arataka #arataka reigen #kageyama shigeo #shigeo kageyama #kageyama ritsu #ritsu kageyama #reimob #mobrei #ok this gotta be enough tags #& yes ofc this is reimob there's no universe for me where these two aren't destined for eachother fight me #this is also definitely shorit #probably shoritteru #maybe terumob shared some kisses during the vault years #even more likely shimateru had a thing but I am not yet sure if it might have been a horrible one (sorry Teru I adore you so)#either way I wanna write some vault years hcs down at some point too #how the esper kids relationships evolved & all #and I think it would be interesting for Mob to meet the claw members first before reigen #even with lesser impact because nobody has strong powers yet at that point #and yeah Reigen needs a backstory I couldn't decide on yet. If he was born in the wasteland or in a vault or if he might be from pre-war to #headcanon #mine #my writing

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