A/N this is a time travel/soulmate fic.

Inspired by: Viridian SilvermistAnimeLover

Warnings: M/M slash, Soulmates, Suicidal thoughts, Multiple personalities, PTSD, Abused Izuku

Betaed by Cat-Tac

Izuku's POV

Thwap. The sound resonated through the arrow protruding from his target's chest, missing their heart by mere centimeters. The man who released the arrow slung his bow over his back before rushing towards the target with a black knife drawn.

The target was a blue-haired man, and he lay sprawled out on the ground. Below him, blood saturated the ground from where the arrow protruded. A hand was desperately trying to free the arrow from his chest. It was too late however as Izuku bent to his side and dug the arrow a little deeper, causing a gasp of pain to escape the man.

Coldly, Izuku placed the knife at the blue-haired man's throat and growled, "This is the end for you Shigaraki. Your reign of terror is over."

Shigaraki laughed, his breaths coming in shallow gasps now, "You may have killed my mentor and I, but you have not saved the world. The world was doomed from the moment we took over. Killing me will only prolong your suffering."

The hollow laugh haunted him. It had ever since the day that Shigaraki and All For One murdered All Might eight years ago. This would be the last time anyone heard that damned laugh.

Izuku slit Shigaraki's throat without hesitation and watched as the light went out behind their blue eyes. Then he waited a few moments, listening to the unnatural silence of the city around him. Then he pulled the arrow out of the man's chest. He wiped the blood off the arrowhead and the blade of his knife. After checking the arrow for damage he returned it to the quiver at his hip.

Arrowheads, knives, and bullets were all weapons that he and other Medusans used. Medusa had been created after the fall of All Might and the other heroes.

Eight years ago, Shigaraki and All For One - a powerful but next to unknown villain - appeared. Together, they killed All Might on live tv. Then, they released horrible creatures known as Nomu. There were different classifications of Nomu, depending on what abilities they had. They had been created by All For One in large numbers in preparation for a war.

Nomus killed anyone and anything they came across. It didn't matter whether it was a hero or a civilian. All they knew was how to kill.

Izuku, as a quirkless adult, was drafted into the program. Five years ago the intelligence agencies that were banded together found a new metal buried deep within the mines. It wasn't shiny or pretty to look at but it was sturdy. The problem was in its pure form; it disrupted the quirks around it. That was how they got the idea to turn it into weapons.

With the help of quirkless blacksmiths, the newly dubbed Orichalcum ore became weapons: arrows, bullets, and knives. They were indestructible even against a disintegration quirk. Putting even a single arrow or bullet into a person's body would stop any and all quirks. In nomus, it stopped all of their quirks.

The weapons turned the tide in their wars because of the newfound ability to kill nomus as quirkless. People were beginning to have hope again. Then two years ago they killed One For All.

It had taken the last of their resources to track down Shigaraki after that. Now, the war was finally over - but at what cost? Humanity was on the brink of destruction and their world was never going to recover. It would only be a matter of time before they all died.

Maybe it was time that he went out on a mission and never came back. The only one who would miss him were Charlie and Echo. Like him, they were a part of Medusa. If you were in Medusa, you didn't get a name - just callsigns.

The last time Izuku had heard his name was when he was 21 when the program first started. Now, at 26, he was worn down and done with life entirely. The only reason he had fought for this long was to kill Shigaraki. With the bastard dead he was no longer needed. Still, he would not go off not without seeing the others one last time. They had been as close as brothers through all this.

The bunker that they called home was on the far side of town. The entrance was surrounded by collapsed buildings; even nomus didn't go near.

Izuku pushed the broken door to the bunker open and closed it. The air around him was silent and still. The main camp was further in, but it was unusual that someone wasn't at the door to guard it.

Cautiously, he made his way towards the meeting room. Shadows leapt out at him, reminding him of the fall. Reminding him of the black nomu who hunted at night where they could not easily be seen. His hand never left the knife in his belt.

Voices could be heard in the distance as he approached the meeting room. One of the voices, which he recognized as Conklin, their leader, said, "We have been planning this for years, Echo. There is no reason it shouldn't work. There is no saving this world and we all know it. But if we go through with the plan we could create an alternate timeline that's separate from the original. Save it from becoming this one."

Alternate timeline? Were they talking about time travel? He didn't think that was possible. They had lost their time-manipulation quirk users early in the war. All For One wanted their power for himself, but instead of letting him get the power, they had killed themselves.

Pushing open the half-closed door of the meeting room, he drew the attention of the three men. One was a brown-haired man with hazel eyes, who was leaning on a cane. He wore a black t-shirt with a sagging collar from overuse. It revealed a blacked-out soul mark. Anyone who saw it knew that the man had lost his soulmate. Unlike many though he survived the loss.

Alexander Conklin, like the rest of Medusa, was quirkless but he had run the intelligence agencies and combat divisions before the fall. He took sniveling cowards and made warriors out of them. Without him, Izuku would not be the man he was. In all honesty, he probably would not even be alive. The tendons in the man's right leg had been torn to shreds by shrapnel in a bombing run. It was lucky he had not lost his entire leg. But it kept him from going out on missions any longer.

The next man had dirty-blond hair cut short, close to his head, and blue eyes. He was wearing a black combat jacket and BDUs, the same outfit Izuku and the third man were wearing. Unlike Izuku though the man had his jacket unzipped, revealing the grey undershirt. Echo was never one for following protocol. Though five years older than Izuku, he acted like he was younger most of the time. The jackets were lined with kevlar, which would protect from most quirks and weapons. Having one unzipped was asking for trouble.

The third man was only two years older than Izuku. He had shaggy black hair that hung over his grey eyes. He too wore black BDUs and a zipped up black combat jacket. It was Charlie, the only other surviving member of Medusa.

When he saw Izuku, Charlie nudged Echo and cleared his throat. That had the other looking at him.

Conklin looked up, his eyes meeting Izuku's dull green, "How did the mission go? Is Shigaraki..."

"He's dead. I slit his throat," replied the youngest, voice devoid of emotion.

"Come in Delta. I have something that I want you and the others to consider. Its something of a final mission," Conklin said, waving him inside.

What mission could they possibly have left? The world was ending, destroyed by humans who wished for Shigaraki's death but went about it in the wrong way. All he wanted was peace. Still, it was his duty to at least hear the man out.

Izuku tiredly rubbed his eyes as he said, "Then let us sit and talk about this. Conklin what is this final mission, and why is Echo so against it?"

He trusted Echo. It was Echo who always had his back through thick and thin. It was Echo who taught him how to hack, pick locks, and how to throw a knife. It was Echo who gave him his first bow, which he now treasured above all else.

They all sat at the table that adorned the middle of the room. On it was a lay of the main city and where what was left of their forces were. It wasn't much, but with Shigaraki dead the remaining villains and nomu would be feeling lost.

A knock on the other door in the far corner of the room drew their attention. Conklin barked, "Enter".

Two women and a man entered. Izuku recognized the man as one of the two people with a time manipulation quirk. If he remembered correctly this one had the stronger quirk. He must have faked his death as protection.

Conklin greeted, "Anna, Seri, Loke. Welcome to the three that I hope will undertake the mission."

The three members of Medusa raised their chins. There was silence waiting to see what Conklin would say next.

Conklin began, "First off I would like to congratulate Delta. You killed Shigarki without any backup. Well done," at the praise Izuku raised his chin, "when we first realized that there was little hope for our world we began to prepare a Plan B. Almanac here has a time manipulation quirk. With two quirk amplifiers and the training he has done, we believe that we could send the three of you back in time, with a small bag each. Exactly when you would arrive is unsure, but we think it'd be between 10-15 years ago. This isn't an exact science. Neither do we have a guarantee that it would work. But if it does, you wouldn't be coming back. It would create an alternate dimension. We want you to go back and kill Shigaraki and AFO before they destroy the world."

Izuku blinked in surprise. They wanted to send three of them into their past selves. Was there even a guarantee that they would keep their memories? There were so many ways this could possibly go wrong, and Alex knew it. But at the same time, if they succeeded then they could save the world.

"What are the chances of this working? If it does succeed in getting us to the past, how are we supposed to find each other? On second thought, is there a guarantee we will even still have our memories?" Izuku asked, his green eyes growing cold as his Delta persona took over.

"Delta, there is about a 50 percent chance of this working. Or it could very well blow up in our faces. But it's our last shot at saving the world. At saving all the innocents," Conklin replied, the man's hand unconsciously touching his soul mark.

Izuku felt for his handler. He really did. They both had never met their soulmates. During the early years of the war, both of their soulmates had died. It was only sheer force of will that kept them going.

Sighing, he replied, "I'll do it. Anything is better than being stuck here. I want Orichalcum ore and my knife in a bag. We can make more weapons once there. Echo, Charlie you've both been through hell. I'm not going to ask you to go with me. But if you should decide to, you would both be welcome."

"You idiot! If you're going then, of course, we are too! We are Medusa, we never leave a man behind."

Charlie nodded his acceptance. There was no way they would let him do this on his own. Echo, was right after all. Medusans stuck together no matter what.

And with that, the fate of the world would be rewritten.