Doctor Izuku

(Inspired by Doctor Who and Erma: The Ghost Girl)

When Izuku is told by All Might that he cannot be a hero without a quirk, he decides to take Bakugou's advice and take a swan dive off a roof.

He hits the ground, All Might sees him, and he dies...

Except, he doesn't. His body begins to glow and heal, and in a roar of fiery light, he does something remarkable.

He regenerates into a completely different person.

All Might takes him to a hospital, where the doctors are confused about how Izuku could possibly have a quirk at all. Despite the two-jointed toe resulting in quirklessness theory having been discredited years ago, Izuku was confirmed to be quirkless. All the genetic tests and blood trials had proven this. He is functionally quirkless, so how was he able to hold a quirk at all.

Then, Izuku wakes up, and it reveals that not just his physical appearance has changed, but also his personality as well. Where once he was shy and timid, now he was confident and snarky, almost smug, and with not much of a filter to his voice and a penchant for speaking his mind no matter what.

The doctors soon reveal to Izuku, All Might, and Inko Midoriya that the former's new quirk is something that they can't even begin to understand. Functionally, he is still quirkless, despite the evidence to the contrary. All the scans that they have carried out reveal nothing out of the ordinary. He has no special abilities, no sudden changes beyond the obvious alterations to his biology, nothing at all. They are positively confused by the change.

However, regardless of whether the scans are correct or not, Izuku has a quirk now, and is alive because of it, and All Might apologises for what he said to Izuku. Izuku, however, with a new perspective on life, begins to doubt whether or not he even wants to be a hero anymore, even though he is still planning on joining U.A. in its general education course. Maybe he should take some time out of his life to travel the world...

So, for the next ten months, instead of training to join U.A.'s hero course, Izuku spends his days reading and studying, having been pulled out of Aldera by his mother over what happened with Bakugou. One of the first deviations from canon is Izuku's intelligence, in that it has dramatically increased due to Bakugou and Aldera's bullying giving him nothing to do but sink into his studying and analysis. As such, when Izuku takes the entrance exam for U.A., he aces it.

Soon enough, he enters U.A. as a member of its gen-ed course, and attempts to make a friend in Shinso, but fails due to the latter's abrasiveness. However, he would soon find his first ever friends in others in the general education department, as well as Mei Hatsume and the others in the support department, and would begin to impress his teachers with his intelligence and technical prowess.

However, one day Izuku comes across one of his friends acting strange on the day of the press break-in, and realises that that same person is not his friend, but instead a villain who has replaced them, calling themselves the Zygon. Using just his wits and intellect, Izuku is able to outsmart the villain, expose them to the heroes of the school, and get him apprehended. Upon seeing the Zygon being carted away, Nezu at first chastises Izuku for going up against a villain without alerting the heroes prior, before congratulating him for taking the villain down.

Soon enough, Izuku is praised for his takedown of the villain, and this begins to feed into his confidence and growing ego, eventually making him become arrogant, convincing himself that he is simply smarter and better than everyone around him.

However, this sense of hubris within Izuku would be torn down when his class goes on a fieldtrip to the headquarters of Mondas Solutions, a massive conglomerate that had a hand in every major market relating to electronics, support items, medicine, pharmaceuticals, and medical issues, including limb and organ replacements.

However, here, Izuku begins to hear whispers about the Quirk Singularity theory, and engages in a pointed discussion with the founder of Mondas Solutions, one Doctor Christine Allen, who answers to the board of the company, known as the Central Committee. During their conversation, Izuku discovers evidence of a plot taking place in the centre of the corporation, including around the local towns, where the homeless are disappearing, and the graves are being dug up. On top of this, the earbuds that are being sold by the corporation leave him concerned…

Izuku begins an investigation into the group once the fieldtrip ends, eventually roping some of his friends into helping him out as they look into the disappearances, having to move carefully as to not run afoul with the police as they do so, including Detective Tsukauchi, who suspects that some of his own people in the force are on the take of Mondas. One night, Izuku and the others find a group of homeless people, with blinking ear buds in their ears for some reason, digging up countless graves in a graveyard and gathering up the bodies inside. Izuku and the others are forced to run when those same homeless chase them off.

Back in U.A., Izuku and Hatsume use an access card that they'd swiped off a Mondas Solutions' worker and use it to gain entry into their systems. They realise that Doctor Allen and the Central Committee are planning something relating to the ear pieces that they've been selling, but are unable to figure out what it is. Izuku decides to use his personal connection to All Might to get his friends and himself entry to a grand party hosted by investors of Mondas Solutions, hoping to find answers there.

Meanwhile, the Central Committee and Doctor Allen hold a meeting with several investors whom share similar interests and concerns about the future of mankind with them. During this meeting, they reveal that they are all believers of the Quirk Singularity theory, and believe that the end of humanity is approaching because of it. As such, they are all eager to survive it.

The Central Committee, however, wish to see all of humanity survive the coming storm in one shape or form. To see this dream through, they unveil a brand new form of hero/soldier/police worker to private investors that share similar interests with them. A cyborg, with its brain, heart, and organs removed and placed inside a steel and plastic shell, the weaknesses of their flesh replaced with cold efficiency...

The Cyberman.

The investors reject the idea, but the Central Committee deem it to be illogical, and make ready to move forward with their plans.

Later that night, at the party, Izuku and his friends try to get as much information out of the partygoers as they can, and Izuku finds himself angered at how far above the rest of society these high class heroes and elites think themselves. However, once again they find themselves running afoul with Detective Tsukauchi, who has gone undercover at the party with fellow officer Monika Kaniyashiki to uncover whatever is going on at Mondas Solutions as well.

But then, the party is attacked and the partygoers are surrounded by the Central Committee's Cybermen, who proclaim themselves to be the next phase of human evolution. Over the speakers, the Committee, now having undergone their own conversion into the first Cyber-Planner proclaim that all of humanity must survive the coming Quirk Singularity, and that the only logical way to do so is to upgrade themselves into Cybermen. It is here that Izuku and his friends realise that these Cybermen are both the missing homeless people and the dug up bodies from the empty graves.

When the people at the party refuse to be upgraded, the Cybermen begin to kill them. Izuku and his friends are horrified by the massacre, and during their escape, Monika is caught by the Cybermen and killed, and two of Izuku's friends, Maina and Bibimi are captured along with the rest of the survivors.

During their escape, Tsukaichi attempts to call All Might and the heroes to assist in stopping the Central Committee and the Cybermen, and they move to intervene. However, it is too late. Almost all the heroes and everyone in Japan, including All Might himself, are wearing the ear pieces provided by Mondas Solutions. Izuku and his friends are the only ones in the entirety of U.A. who have taken them off.

The Central Committee begin transmitting a signal into the ear pieces, and they take control of everyone wearing them, forcing them all to march towards their processing facilities across the country. Even All Might is unable to resist their control. Meanwhile, the Cybermen at the party massacre round up all the survivors and force the ear pieces onto them, including Maina and Bibimi. They are the first to be converted into Cybermen.

Meanwhile, Izuku and his friends are in shock over what happened, and are desperate to get back to Maina and Bibimi. However, they soon find that a larger problem has emerged, as almost everyone in Japan was wearing an ear piece, and they're all marching off to Mondas Solutions' factories. Izuku and the others realise that this is so that they can be converted into Cybermen, and rush to stop them.

At the primary factory for Cyber-conversion, Izuku's group form a plan on how to combat the Cybermen, move to infiltrate the factory to shut off the signal being sent from the ear pieces through separate positions. However, once again because of Izuku's arrogance, he dominates the planning phase and sends everyone on his way. Meanwhile, Doctor Allen is beginning to have second thoughts on the plan, but she is caught by her own Cybermen and taken away to be converted into the first Cyber Controller. However, she is able to slip from their grasp and escape.

As they infiltrate the facility, Izuku's group realise that they have been outwitted by the Cybermen and have severely overestimated their chances. Soon enough, Izuku's group is rounded up by the Cybermen, with Izuku being caught by the converted Maina and Bibimi, traumatising him greatly.

Izuku and the rest of the group are brought before the Cyber-planner, and are questioned for their actions and why they have no ear pieces on. Realising that Izuku was the one who came up with the plan to infiltrate the facility, the Cyber-planner decides to make an example out of him.

So the Cybermen shock, and kill him, dragging his body away to be disposed of.

The Cybermen then place earpieces on his friends', mind-controlling them, and have them taken away to be converted.

However, before they can be turned into more Cybermen, Doctor Allen rescues them by overriding the controls on their earpieces and the emotional inhibitors on the Cybermen guarding them with a small device, not powerful enough to kill all the Cybermen across the country though.

Not unless they can amplify it.

And so, without Izuku, the group come up with a new plan: find the signal amplifier that the Cyber-planner was using to mind control all the people of Japan, override it, and transmit a new signal that deactivates not just the earpieces, but also the emotional inhibitors on the Cybermen, destroying them.

However, the Cyber-planner is quick to realise this plan, and sends its Cybermen to stop them.

Meanwhile, Izuku wakes up, not quite dead, and very close to regenerating. Feeling his body failing him, he stumbles across the facility until he comes to a room filled with experimental robot prototypes called Cybermats, which he takes control of and aims at the Cyber-planner, eager to destroy its many bodies for hurting his ego.

However, he then sees on the security cameras his friends and Doctor Allen speeding through the facility, chased by Cybermen, and then breaking into the broadcasting room to try and override the transmitting signal, and quickly realising what he has done and what he was going to do, and changes the Cybermats' targets.

Meanwhile, Izuku's friends hold themselves up in the transmission room as Doctor Allen tries to override the signal and send out their own. However, the Cyber-planner proceeds to not so much taunt as it does state what it believes is going to happen to them, Japan, and the rest of the world as the Cybermen break through the doors and marches towards them.

But then, the Cybermats burst through the vents and doors and attacks the Cybermen, destroying them. Izuku calls them through the radio, telling them to transmit the signal, before he himself is found by a Cyberman and shocked to death once more.

Doctor Allen and Hatsume send the signal through, and the earpieces shut off, freeing the people of Japan from the Cyber-planner's control. Then, they shut off the emotional inhibitors, and the Cybermen go mad from the realisation of what they have become.

The mad Cybermen then find the Cyber-planner and destroy it, killing all its organic bodies before killing themselves, destroying the Cyber-race and bringing every conversion facility down onto themselves.

Izuku's group help to rescue people from the rubble as they all recover from the shock of what has happened, but then come across a wounded and broken Izuku, who is beginning to regenerate.

Izuku apologises for what he has done, the arrogance, ego, and hubris he has displayed, and all the lives that he has indirectly killed, and regenerates.

He becomes she. Izuku becomes Izumi.

In wild contrast to their previous personality, this Izuku, Izumi, is not arrogance and boastful, but humble and stoic, quiet, and sincere. She is not good around people, much more reserved and somber, and burdened by the guilt of what she has done and the lives that have been lost, both by her and others. She surrenders herself to Tsukauchi to be arrested for her crimes.

In the aftermath of the destruction of not just Mondas Solutions and the Cyber-planner, but all the Cybermen as well, Izumi and her group of friends are celebrated by Japan for saving them all. However, in stark contrast to how they had previously lapped up all the praise of defeating the Zygon infiltrator, Izumi is quick to deflect the praise away from her and back to her friends, calling them the real heroes and refusing to accept any praise. Instead, she asks to be held accountable for the lives that had been lost because of her arrogance, and for those that have died to be mourned before they celebrate anything else.

However, instead of arresting her and letting her be sent to prison, Nezu instead shields her from the law and takes her sacrifice in the facility and her hand in stopping the Cybermen as penance for her crimes, though Doctor Allen is forced to go to prison for her hand in creating and developing the Cybermen, as well as her role in the Central Committee's plan as well. Rather than be thankful for this, Izumi is disquieted and hurt by this, seeing it as unjust.

This is the end of series one of the story. Each series would revolve around Izuku confronting a character flaw of his and overcoming it. This first series would about his overcoming his arrogance and ego. The events with the Cybermen would serve as the replacement for the USJ, as the Zygon infiltrator from before would've been the one that had supplied Shigaraki and the League of Villains with the information that they needed for their attack on the school. From here on out, there would be several epilogues:

The first would be with said League of Villains, where Shigaraki would be raging over not only the Zygon failing to get them the information that they needed, but also the Cyber-Event (as it would soon be called) completely overshadowing any possible attack that they could pull in the future, not only because it destroyed so much and killed so many more people than they could ever manage, but also the fact that it had been stopped not by heroes, but by a group of children from U.A. who weren't even part of the hero course. All for One, however, takes note and interest in Izumi's quirk as he is contacted by Doctor Garaki who tells him that he has found them a new ally in an old friend from the German country of Skaro, one that has been locked in constant civil war between the Thals and the Kaleds: one Yarvelling Davros, who will help them create the perfect Nomu and body for All for One as long as they help fund his personal project.

The second would focus around Yarvelling Davros himself, who would find interest in both the quirk and the intellectual mind of Izumi, admiring her takedown of the Cybermen, even as he is aware of the other eyes that are watching her. He then muses on the philosophy of the Central Committee and even agreeing with it, seeing as how he is a burnt survivor of the Skaro Civil War on the side of the Kaleds, but disagrees with what they were trying to do. Instead of fighting against the inevitable mutation that would destroy all of mankind... they should embrace it, and be made stronger for it. He would see the end of humanity as a challenge, and take from it the ultimate lifeform.

The third epilogue would centre around the other eyes looking over Izuku. However, they would remain ambiguous on both their identity and their intentions.

The fourth would revolve around Izumi as she attempts to recover from the Cyber-Event and everything that has happened around it, but is interrupted by a message from an Ood, a member of a race of docile creatures found underground over a hundred years ago in a place known as the Ood Sphere. Confused as to why the Ood was there, seeing as how Ood rarely if ever leave their home, the Ood simply delivers a confusing message to her: 'The Angels have the TARDIS.'

And then, in a fifth epilogue, a young girl stumbles through an alleyway, broken, wounded, and dying... and then she begins to glow...

And then she regenerates.

Series two of the story would centre around Izumi's guilt complex, and begin with Izumi stumbling aimlessly through U.A., surrounded by people who both praise her for helping to take down the Cybermen and blame her for getting Maina and Bibimi killed. She is lost on what to do and filled with guilt over what happened, and takes to closing herself off from her friends and just about everyone else in order to protect them and herself.

His friends, however, refuse to leave her on her own, and decide to conscript her into a new mystery in the school to take her mind off what happened: the scuttling in the walls.

Izumi quickly throws herself into this mystery, but still cannot stop thinking about the events that came before, feeling unworthy of having friends or even calling herself a member of the academy. Even when she finds a lead on this little case, that being shreds of lizard skin between the walls, her mind refuses to leave the memories of the past.

Izumi's friends decide to stay behind for the night to investigate what is going on, dragging her along with them. Soon enough, they spot Nezu, along with a teaching assistant by the name of Jenny Flint and a student that they knew as Setsuna Tokage, staying behind for the night, slipping down through a hole in the wall and following a swarm of lizards down through a tunnel, past the basement, and deep under U.A.. The group follow them down, only to come across an ancient city built underneath Musufatu...

Populated by a hidden species known as the Silurians.

As it turned out, Nezu had been in contact with this colony of Silurians, trying to help them and the other clans of Silurians in keeping their emergence into modern society peaceful, not helped by by the fact that many of the clans wanted to go to war with the humans above. More surprising to the students, however, the group learn that Jenny and the leader of the leading clans of Silurians, one Madame Vastra, are wives, and Setsuna is their child, making her a half-human, half-Silurian hybrid.

But then, Nezu points out where Izumi and her friends are, revealing that he knew that they were following them. A brief scuffle breaks out between Izumi's friends and the Silurians, during which Izumi panics and throws herself in front of her friends. However, Nezu and Vastra are quick to stop the fighting, and after some questioning, Setsuna fills them in on what is going on:

Before humanity had ever evolved, the Silurians ruled the Earth alongside the dinosaurs. However, when the meteoroid that wiped out the dinosaurs hit the planet, the Silurian clans fled to under the Earth's crust and entered cryogenic stasis, their esoteric computers awaiting for the time that they could awaken and reclaim their world.

However, they had exited stasis at the time of the awakening of quirks and the emergence of heroes. The Silurian clans had been ready to go to war with the people above, but the first principal of U.A. had found and convinced them to stand down and work for peace. From since then, it had become the duty of each principal of U.A. to help make sure that the coming emergence of the Silurians is as peaceful as possible.

It had been to this end that Jenny and Vastra had married each other. At first, their marriage had been arranged by both Nezu and the elders of the Silurian clans as a political move, but soon, the two eventually fell in love and made a child with each other, that being Setsuna and another by the name of Rapt. Setsuna proves this by morphing into her Silurian form.

However, apart from being seen as a freak, Izumi and her friends instead find her to be cool and are quick to accept her, proving to both Nezu and the Silurian elders that cooperation between both Human and Silurian was possible, which the former had hoped for.

Soon enough, the Emergence takes place and the Silurians became known to the whole world. Silurian children would begin attending U.A. alongside Humans, and Setsuna would become part of Izumi's friend group.

However, Izumi is still troubled by the message that she received from the Ood not to long ago. She has no idea what a TARDIS is, or what an Angel is in this context. She is also unsure as to why she seems to be hearing a strange groaning noise every now and then.

Izumi tries to keep her mind off this strange message for the time being as she tries to be friendly to her classmate Shinso. However, his abrasive personality and jealousy over her popularity from both the Cyber-Event and now the Emergence, makes him difficult to be affable with and rather unlikable, especially when Izumi's new humble attitude grates on him all the wrong ways.

Soon, the Sports Festival comes about, and when compared to canon, it's a much more quiet affair. Hero society is still reeling from the Cyber-Event, and the Emergence has only served to rattle people more. Less people attend the Sports Festival, and the news and media networks are more focused on the repercussions of the Cyber-Event and the Emergence to bother with U.A.. As such, the Sports Festival is treated as an afterthought by the world, and the students participating are demoralised because of it.

Not only that, but because of Izumi's lack of presence within the hero course, as well as the lack of a USJ, the hero course students are a lot more bitter to each other, especially because of Bakugo's abrasive attitude and Shoto's stoic aloofness and singling out of Bakugo as a rival without any regard for anyone else. Worse yet, they also feel overshadowed by the Gen Ed course students due to their elevated position of prominence in the eyes of the world for their roles in both the Cyber-Event and the Emergence, especially when several hero students were beginning to get harassed by civilians for their lack of involvement in these events. As such, the resentment between the Hero Course and the Gen Ed course is flipped around, which only serves to make the whole festival feel more bitter in the mouth.

In the end, the Sports Festival is a quiet affair that doesn't catch much traffic, and Shinso, Bakugo, Todoroki, and the other students participating in it are left unsatisfied by the whole event, as they will not be receiving as many offers or attention from the public when the media is still dominated by the politics behind the Emergence and the aftermath of the Cyber-Event.

Meanwhile, Izumi would spend the Sports Festival in the infirmary, working with Recovery Girl to help heal injured students after events, whilst also finding a confidant in one Ochako Uraraka from the Hero Course. It is here that she starts to consider becoming a doctor.

Soon, the Sports Festival ends, and Recovery Girl decides to take Izumi on as an apprentice, hoping that giving the girl something to do would serve as a form of therapy for all her rolling thoughts. Soon enough though, she would be contacted by one Yavelling Davros, revealing that Recovery Girl is actually a Kaled refugee from the German state of Skaro. The conversation between the two is tense, and Recovery Girl is shocked at the fact that the elderly scientist has expressed a personal interest in her protégé.

In the aftermath of the Sports Festival, the Hero Course students would head off on their internships, and would spend almost all of it dealing with the continued aftermath of the Cyber-Event and the Emergence, settling tensions between technophobic mobs and stopping them from attacking support companies, and keeping relations peaceful between Humans and Silurian clans. In particular, Ochako and Tsuyu of Class 1-A would run into trouble with a group of Silurian raiders known as the Sea Devils, to which Ochako would display some additional quirks to her personality, being a tiny bit more snide and sarcastic with her comments.

Tenya, on the other hand, would attempt to hunt down Stain for crippling his brother, at the same time as the League of Villain, still having its manpower saved over from the lack of a USJ incident, as well as both the All Might killing Nomu and the other Nomu that took part in the canon attack on Hosu, laid siege to the city and spread anarchy wherever they went. During the chaos, both Iida and Todoroki would come across Stain...

And without Izuku there to assist them, and with Todoroki still holding his fire back thanks to not having his fight with Izuku as well, both Iida and Todoroki are killed, and Stain slips away into the darkness.

Meanwhile, Izumi is supposed to be on a trip alongside Recovery Girl to help treat and heal the long-term survivors of the Cyber-Event, but she is instead cut off and trapped within the burning city of Hosu. When she comes across multiple civilians hiding away from the rampaging villains, she decides to take the initiative and lead them out of the city, helping to save dozens of innocents from being slaughtered by the monsters attacking the city, and then saving a dozen more as she puts the medical skills that she learnt from Recovery Girl to good use.

Then, she comes across what looks like an elderly version of Tsuyu, suffering from a mortal wound, who gives her a strange-looking key and gives her a warning about someone who called themselves the Master before she expires.

Soon enough, All Might and an army of heroes arrive in Hosu and drive back the League of Villains, and Izumi is once more commended for her actions during the battle. However, she refuses any credit or acclaim, and is instead rattled by the death of the woman who had warned her about this 'Master' person, who had given her a strange key, and who had looked like an elderly Tsuyu.

Meanwhile, Ochako continues to speak to Tsuyu, and the frog girl finds herself growing fond of the gravity controller, even if she could do without the snarky comments. However, one of her classmates, a girl by the name of Yui Kodai, gives her a strange looking key, and tells her not to tell anyone that she has it.

Meanwhile, Izumi begins to suffer from headaches as she tries to focus on her schoolwork, somehow noticing little oddities in historical records that shouldn't be there, little contradictions and paradoxes. Dates getting mixed up, things happening out of order, minute things, but they are beginning to add up. Strange winged creatures were beginning to fly around the world, eating people whole, and others are beginning to disappear.

Reality around her is beginning to fall apart, cracks are beginning to form, and Maina and Bibimi are with her, walking around as if they never died.

Something is wrong with time.

Izumi goes to investigate, finding that everyone around her are somehow holding contradictory ideas in their heads as if they were both true. Her head pounds and aches as she comes across more and more paradoxes.

Then, she bumps into a child. A quirkless girl with white hair and red eyes by the name of Eri. A girl who is running away from the Angels...

Just as Tsuyu is, on her way home, caught and cornered by a winged statue. One that moves whenever she looks away, whenever she blinks, and one that sends her back into the distant past, key still in her pocket.

Izumi carries away Eri in her arms, avoiding the flying creatures around them, only to realise that the creatures were ignoring them, and were focused on eating the people that should not be alive, most of them the casualties of the Cyber-Event, which strangely settles Izumi's headaches whenever it happens.

In U.A., Izumi talks to Eri, who reveals that she was running away from statues of angels. One that always seemed to be crying. She called them the Weeping Angels. Izumi realises that there have been tons of strange statue sightings in the city recently, and goes to her friends to try and figure out what is going on.

With her friends, including Ochako, All Might, Setsuna, and Maina and Bibimi, Izuku tells them of Eri and what has been going on, and reveals to them the messages that she's been getting about Angels and someone called the Master, as well as something about a TARDIS, and shows them the contradictory information in the history records. Though they are unsure at first, they accept that something is wrong, though many of them put it down onto a quirk.

Deciding that they need answers, Izumi and her friends and allies, now including Eri and one classmate by the name of Yui Kodai, set off for the smartest person currently in the country for answers: one Yarvelling Davros, who had been brought in by the HPSC from Skaro to Japan to examine and dissect the Nomu corpses that they'd recovered from the Battle of Hosu.

Izumi is somewhat ecstatic to meet Davros, as he is a personal hero of hers, being a quirkless genius who had survived hell and back, that being the Skaro Civil War, even in his withered, ghoulish state, and had risen to become one of the most prominent minds in the entire world, but is able to control her fangirling as they all work together to understand what is going on. During their investigation, Izumi and Davros have several conversations with each other, testing each other's minds with their questions and queries, before Davros points out that, not too long ago, his scientists had discovered a strange machine that had suddenly popped up into existence one day, only to disappear the next. They had assumed it to be a trick by Thal sabetours, but now he wasn't so sure.

But then, the facility that they are sheltering in is attacked by an unknown enemy, and Izumi sees the face of her newest foe for the first time: the Weeping Angels.

Soon, hundreds of Weeping Angels break through the perimeter and into the facility. The situation is only made worse when Izumi discovers that not only can the Angels interfere with electronics and lights, but that any image that holds an Angel will itself become an Angel.

Soon enough, they are surrounded by Weeping Angels, and that is when they are betrayed...

By Ochako, who fatally shoots Eri with sadistic glee, revealing herself to not only be in league with the Angels, but also that which Izumi was warned of...

She is the Master.

Izumi, Maina, Bibimi, and a dying Eri are all sent back in time to the same time period, in the days before quirks existed, with Ochako, now revealed to be the Master, laughing at them all the way. Everyone else is scattered through time, and Ochako moves into the captured TARDIS that the Angels had seized, piloting it to begin creating even more paradoxes in time.

Then, back in time, Izumi, Maina, and Bibimi witness Eri do something remarkable...

She regenerates, just like Izumi can. Suddenly she has red hair, green eyes, and is very confused about what is happening to her.

Izumi, Maina, Bibimi, and Eri spend months wandering around in the past, disguising themselves as to not draw any attention to themselves, and try to figure out what is going on. Izumi keeps the informaion of Maina and Bibimi's deaths to herself, though. Setsuna and Hatsume, meanwhile, find themselves during the age of Dinosaurs, where the two of them help to give the Silurians their technology and elevate them into masters of the Earth. And elsewhere, All Might and Yui find themselves lost in the days where the first quirks were beginning to emerge into society, with Yui suddenly leading a confused All Might along through the beginning of what would become known as the Dark Times.

All the way, they are hunted by the Weeping Angels, as timeline after timeline collapses all around them.

However, they soon find cracks in time and space, widening and shifting with each alteration that the Master and the Angels make to time. More than that, Izumi and her group find evidence of messages that have been left over for them from Hatsume and Setsuna in the past, and they all begin to work together over time to uncover the truth behind the Angels, the Master, and the Tardis.

Through the expanding cracks in time, Yui is able to send clues to Izumi about the key in her possession, and how that links to the mysterious TARDIS, and she realises that the key acts as a sort of homing beacon for whatever this strange object is. When she tries to ask as to what this all means, or how she knows about all of this, Yui does not answer.

Soon enough, Izumi and her part of the group are able to use the key to track down where the TARDIS is, and they find it buried underground. Izumi feels herself bonded to this strange looking machine for some reason.

Then, suddenly, the Weeping Angels attack, and they find the Master rolling with them in a different form, a man, having tracked them all the way to the TARDIS. But then the Master questions why they are there, and Izumi realises that they are meeting out of order, and that this is, in the Master's timeline, the first time that she was getting to the TARDIS. They'd just led them to their prize.

Izumi and her group are forced to flee the Master and the Angels, leaving them to take the TARDIS for themselves. During the scuffle, Izumi, Maina, and Bibimi injure the Master, and they discover that he can regenerate too, changing into the form of Ochako Uraraka.

However, the Master recognises that Maina and Bibimi are supposed to be dead, and cruelly reveals this to them, shattering their trust in Izumi and leaving them broken.

However, during the fight, Izumi is able to swipe a strange watch from the Master and legs it, activating the machine and sending them all back in time once more.

She had taken the Master's vortex manipulator and jumps away, back in time to Hatsume and Setsuna's time.

Meanwhile, All Might finally begins to get answers to his questions out of Yui, and she reveals that the TARDIS is an advanced travel machine capable of moving through time, and that it had come far from the future, though because it had been stolen by the Master before she lost it planeside. When All Might asks to how she knew this, she refuses to answer, but All Might is able to intuit that she came from the future as well, and that she had been sent to track it down and recover it.

Back in time, Izumi is confronted by Maina and Bibimi, who are furious at her for hiding the truth from them, and they refuse to allow themselves to die again.

Izumi and her group meet up with Hatsume and Setsuna, and they discover that they can use the vortex manipulator to jump forward in time, and then use the key to track the TARDIS through time. They them use the watch to jump through time, eventually ending up right at the dawn of quirks alongside All Might and Yui, where they discover that the Weeping Angels and the Master are planning on killing the first child and preventing quirks from ever coming into existence.

Soon enough, the heroes put a plan into action, and they begin to fight back against the Weeping Angels and the Master, using the flying man-eating beasts that had been following them for so long, which Yui calls Reapers, to destroy the Angels as Izumi heads off against the Master.

It is here that we finally learn of the Weeping Angel's plan: they feast upon energy created from shattered timelines, so intent to create a thousand paradoxes across time in order to feast on the potential energy generated from them for all of eternity.

Meanwhile, the Master had thrown herself onto the Angels' side, but had now betrayed them for her own ends: she wished to use both the TARDIS and the death of the first quirked child to create such a massive paradox that it would destroy all of time, so that she could rewrite it all from the ground up to her liking and rule over her new universe as a god.

Here, Maina and Bibimi finally see the damage that is done to the universe through time paradoxes, and come to terms with themselves.

Izumi and the Master come to blows, and Izumi is very close to sacrificing herself to stop her opponent thanks to her guilt complex, only to be stopped by Yui as she throws herself in the way of a blast from the Master's weapon...

And then she regenerates herself, decking the Master hard and allowing Izumi to defeat her, the latter woman pushing the Master in the way of a Reaper, allowing it to feast on the renegade regenerator and killing her.

Izumi and her group, alongside a regenerated Yui, rush into the TARDIS and flee, finding that Izumi, Eri, and Yui are somehow naturally in tune with the machine and its functions. Izumi's group then discover that there is one central pillar that all of these paradoxes are built upon, and that if they can solve that paradox, then all of time will rewrite itself back into the correct position.

It is the night of the Cyber-Event, and it is when Maina and Bibimi are killed.

Izumi is horrified by this, and refuses to allow her friends to die once more. But Maina and Bibimi, having seen the damage done to all of reality because of time paradoxes, and have finally come to accept their fates.

So, with one last goodbye, they are able to convince Izumi to let go of the guilt that she feels before it destroys her, and walk to their ends, at peace with themselves.

With Maina and Bibimi's sacrifice, the central paradox shatters, and with that all of time is restored. All the people that died because of the Angels and the Master are brought back, everything is put back to normal, and Izumi and her friends are left to contemplate the future.

Series two ends on a calm note, with Izumi finally letting go of her guilt complex in remembrance of Maina and Bibimi, and decides to use the TARDIS not to disrupt time, but to simply sightsee the world through its past, essentially just go travelling the world, and her friends, Setsuna, Eri, and Hatsume all decide to go with her on a grand tour of the past.

However, Izumi still is unsure of how to feel about Yui, now that she has revealed herself to be capable of regeneration, and that she is still keeping secrets from her. Secrets about the future, and about her future...

The epilogue for Series Two ends with Davros contemplating the future that he is about to step into, and reveals that, thanks to the funding he's received from both All for One and the World Hero Association, the first of his new prototype casings has been created for the mutants...

Soon, his Daleks will inherit the world...