Hi, there peeps, Klyju here! So, as you all may know, I am busy with some other stuff, like getting ready for college, work, getting scholarships (thanks, Mos), gaming, and of course, writing. However, as much as I'd rather want to work on the other stories you all want me to update, I can't always find the motivation to keep writing them, nor find ideas to keep them going. As I'm writing this author's note, I am also working on Kimetsu no Kaiju, even though the burnout was starting to kick in. So, because of that, I began to look for other ways to continue writing. Thankfully, inspiration hit me, and after asking somerandomguyonline for permission, as well as reading certain other stories to inspire me, I finally threw my hat into the ring and wrote this! I hope you all enjoy reading as much as I did writing this! As always, any and all media and references that are shown are all owned by their respective companies. Without further ado, OPEN THE GAME!

"And you shall be their savior… Your strength, their shield… And your will, their sword… You remain unbroken… For your fight is… Eternal…"

As the green energy blast collided with the massive beast, the explosion staggered it, causing it to lose its balance. The Icon of Sin caught itself on the building to catch its breath, trying to use its Argent energy to heal quickly, but doing so only gave it's opponent the opportunity to bring out his Crucible, the red blade of energy surging to life as he ran up to the downed demon, leaping into the air for one final attack and stabbing it in the brain.

Feeling the surge of pain, the Hellish Titan tried to get back up, but the armored being pushed on the Crucible's handle before it broke away from the blade itself. Satisfied, the man ran off of the demon's head as blue veins of energy coursed through its body. The Icon let out one last roar of defiance, trying desperately not to fall, but the effects of the blade have set in. It fell towards the building chin first before sliding off, never to threaten anything ever again.

The armored being looked over the edge of the building, watching as his long-time foe fell to the Earth before walking away to the center of the skyscraper that served as the arena for their final battle. A portal opened up in front of him, and as the DOOM Slayer walked through it, the cheers of humanity's survivors rang out, celebrating the end of the invasion.

Fortress Of DOOM

The Slayer walked into the space station he called home, his body noticeably relaxing as he looked down towards the Crucible handle, somewhat disappointed that he had only reunited with the weapon for a brief amount of time.

Whatever, he can still rebuild it, it's still good.

As he began to ready the portal to Taras Nabad, the familiar static of Hayden's computer-generated voice came through his helmet's earpieces.

"Slayer," The cyborg's voice came through. "Once you return from Taras Nabad, there is something we must discuss, and you may require the Crucible for this."

Though curious, the Slayer understood the doctor's advice was sound for once before he loaded up his weaponry, the blue portal opening-up to the ancient city that housed the forge of the Crucible.

Within a few minutes, mostly filled with exterminating any straggler demons he found, as well as escaping his former Night Sentinel comrades, he returned to the bridge of the fortress, the head of a Hell Knight sliding in alongside with him, smearing some blood across the floor. The Slayer let out a grunt of annoyance, but it didn't really bother him that much once the head disintegrated after a few seconds, leaving behind only a stain that could be mopped back up. But before he could do so, Samuel's voice returned with a familiar crackle.

"Now that you've returned, Slayer," The doctor's baritone voice began. "We can finally discuss what I mentioned earlier." Hearing this, the Slayer turned his attention towards the cyborg's remains, which were suspended near the back of the fortress's bridge. "During the mission in Urdak, VEGA and I found something interesting as he calibrated the slipgate back to Earth… we found a way to the 7th Dimension."

Now THAT got the DOOM Slayer's attention. As if sensing the demon killer's surprise, Hayden let out a low chuckle. "That's right. We found a way to get you back home. It's your choice."

The Slayer looked at the cyborg before he turned to stare at the ground. A way back home… one he hasn't seen in so long…

But did he really want to go back? There was pretty much no good reason to head back there. Life back home was painful, and it wasn't like he was going to be able to do anything there.

And yet, another part of him told him to go back. He needed to see how much has changed since he left, to see how things were going for… them.

He hasn't thought about them in so long. As he began to think more about them, the part that told him to go back got stronger, to check up to see if that world was still okay. To see if the demons have gotten to them.

That was the last notion that made his decision. He quickly went back to the main part of the bridge to start up the portal. "If you go back, then this will be the last time you see this fortress," Hayden said. "Take whatever you need, as well as me, and in the meantime, I will direct us to where you need to go. I wish to see the world that gave birth to the Slayer…"

As the robotic being configured the portal, the Slayer went to his mancave, taking one last look at it before he grabbed a small storage unit he and VEGA were working on from his work station. He began to pack up a majority of his belongings, ranging from the floppy discs, the vinyl discs he found on his trips, the figurines he's collected, including the ones from Mars (he needed to find whoever made them). After this, he transferred some of the files on his main PC to his helmet's storage.

Bless Mick Gordon for his work.

As this was going on, he grabbed his other suits, as well as any Argent cells he could find, knowing that he won't have easy access to the BFG or the Unmaykr back home. Better safe than sorry.

Finished with his work, he made his way back towards the bridge, his mind drifting back to his life in the 7th Dimension. Back to the pain…

"You should just give up."

"I'M SO SORRY!"

"How are you this stupid? Men can't be heroes!"

"IF YOU WANT A QUIRK SO BADLY, JUMP OFF THE ROOF AND PRAY YOU GET TO BE A WOMAN IN THE NEXT LIFE!"

He shook his head, bringing himself out of those memories. A part of him was amused, realizing just how far he's gone ever since then, no longer shackled by their expectations.

By the time he fired up the portal, Hayden had already uploaded his consciousness to a drive similar to the one he backed VEGA up on back then on Mars. He took out the drive before sticking it to the back of his helmet, the cyborg's AI integrating itself into the suit. As the portal opened, the Slayer stopped to take one last look at the Fortress. Despite having lived in it for a short time, he did consider it home during that time…

Soon, the time for reminiscing had passed as the Slayer walked through the portal, ready for whatever would come his way.

He felt space warp around him, and before long, he felt himself standing on solid ground.

Quickly taking a look around, he realized that he was in the chamber that he woke up in a few years ago when Hayden's plans went awry. Speaking of the doctor, the AI let out a chuckle before he explained.

"You see, Slayer, while the sigil and runes were designed to seal you away in that sarcophagus, I figured out that by simply changing the runes and the order they're in, the ritual's purpose will change as well, from sealing away something to creating a one-way portal. With it, you can finally head back home, but only if you follow my directions."

The Slayer's scowl deepened at that notion but understood what needed to be done. He quickly got to work, using any leftover blood to create new sigils and rearranging them, trying to get them right for the ritual. Within a couple of minutes, the circle was complete, the color of the sigils turning from red to green as a portal opened up at the center of the room above the sarcophagus.

The Slayer stared at the portal for a few moments, as if a part of him hesitated to go back.

That hesitation was quickly squashed as he ran up and leaped towards the vortex, ready for whatever his home would throw at him.

7th Dimension

At a hospital, things were in chaos. Only a few minutes ago did the police receive an emergency call that a villain had appeared at the facility and began to slaughter people inside. Things got even worse when some heroes that were already at the hospital providing some security were amongst the victims.

One of the police officers sighed in frustration at the situation, frustrated that they were forced to hide behind cover until the villain revealed themselves for any demands they'd have when suddenly, they felt the car they were hiding behind shake.

"Hey! Saw the situation here and thought I would hop by!" A boisterous voice exclaimed as the officer saw the familiar pair of bunny ears on the Hero's head. "Miruko!" They exclaimed, their mood elevated from one of the top 10 heroes here.

"So, what's the cinch?" The Rabbit Heroine asked the officer, who fumbled to find words before they began to explain.

"Well, we believe that a villain with a fire-related quirk is holed up in the hospital, and from what we've gathered, they are strong enough to kill several Pros that were stationed here. We don't fully know what we're up against, so we have to be careful."

"Fire quirk, huh?" The Bunny Hero muttered, a grin growing on her face. "Alright, it's been a while since I had a good challenge!"

But just as she was about to enter the fray, a green vortex popped up nearby, alerting everyone to its presence as a figure walked out of it. The figure was wearing a very futuristic armor with green coloring on it, covering the figure from head to toe with the exception of his biceps. Some parts of it had a brown coloring, as well as some areas that were seemed to have been left unpainted, revealing the gun-metal grey that the armor was made of. On its left shoulder, there was some kind of miniature cannon mounted on it, on its left forearm, a retractable blade that seemed to be serrated to a degree. The helmet had a glass panel on it, revealing the face underneath.

The man then looked around, as if taking in his surroundings before he noticed the damaged hospital.

DOOM Slayer

The Slayer looked around the area in slight wonder, taking in the sight of his home. It had been so long since he's been on his Earth, and a part of him got nostalgic. He felt the desire to take the helmet off and fall onto a pile of grass.

However, the sight of a damaged hospital got his attention, as well as the HUD alerting him to a demonic presence in the building.

"Of all the places to end up, we land in Japan," Hayden's voice rang from the earpiece before the AI continued. "But this is no time to be sightseeing. You must eliminate this threat."

The Slayer's eyes narrowed as he brought out Lucifer's Bane, quickly loading it up as he began to trek towards the hospital, but an arm got in his way and stopped him. "Hey, what do you think you're doing?!" A voice called out to him.

The Slayer turned to the source of the voice, ready to intimidate whoever tried to stop him, but stopped when he saw a familiar brown bunny in front of him. He blinked quickly, and the voice was revealed to be Miruko's, who had a scowl on her face as she began speaking. "We're gonna have to stop you from doing anything crazy with that gun, and you need to get the hell outta here! It's too dangerous for a man! Leave this to the Pros!" She told him, though a part of her mind was telling her that the man seemed… familiar.

However, before anyone could go and confiscate his weapon, the doors to the hospital burst open as a demonic figure walked out. The demon that towered over the humans even from a distance had tan skin, a muscular build, spines all over its body, which glowed with an orange flame, as well as a bulbous head, snarled at the opposition it saw before it took note of the Slayer. It let out a low growl as its flames began to burn greater with its increasing rage before it raised its arms to the sky, an inferno springing from behind it.

The sight of the demon shocked the group of people stationed in front of the hospital, including Miruko before she gained a maniacal grin. "Alright, I finally get to-!" She began before the Slayer ran past her.

As the Slayer sprinted towards the demon, several orange figures began to pop up before they exploded to form Imps, Soldiers, Cacodemons, and many others, all ready to slaughter the Slayer. With a mighty roar, the Archvile began to fire off attacks at the Slayer, its brethren followed suit as the Hellwaker fired the Meathook at a nearby imp, setting it ablaze as he was then brought towards the demon, firing a grenade towards a group of soldiers, gibbing them quickly before the remains turned to ashes.

He reached the imp within moments, quickly stomping it down to the floor before crushing the skull under his boot, switching to the heavy assault cannon and taking aim at a Revenant, blasting off its cannons in quick succession. Switching to the plasma rifle, he began blasting a barrage of plasma rounds at a group of shield-wielding soldiers, the explosions causing some of the heavier class demons to stagger, giving him the chance to launch an ice bomb at them.

With the heavy demons frozen, the Slayer took out the chaingun, quickly filling them with holes before they got gibbed, meaty chunks of flesh flying off, some of which blew up. This didn't last long, though, as the Dread Knight soon thawed out. It slashed at the Slayer with its argent blades, who blocked the attack, getting knocked back before launching another grenade at the demon. The explosive went off at its feet, causing it to falter long enough for the Slayer to extend his Doomblade and drive it into its skull, killing it.

As he switched his weaponry again, the Slayer heard the familiar squeal of a Pinkie running towards him. He waited for it to get close enough before jumping into the air, dodging the demon's charge. With his shotgun aimed at the unprotected back of his enemy, he activated the auto-shotgun mod and let loose on the Pinkie, gibbing it enough to kill it and return some ammo.

As he switched to the rocket launcher, he felt the presence of a Hell Knight coming up from behind. The Slayer turned towards it, aiming his weapon at the charging demon when up from above, Miruko came down to deliver an axe-kick, causing the demon to fall to the ground. When it tried to get up, the Rabbit Hero leaped up into the air to deliver a powerful stomp on its head, crushing it. With a feral grin, she turned towards the Slayer, who was firing off rounds at numerous fodder demons.

"If you think that I'm gonna let you have all the fun, think again!" She exclaimed as she began to attack the opposition, kicking a Prowler back before running up to it. She leaped onto it, wrapping her legs around its neck before she flipped onto the demon's back, using the mass as leverage. Before the demon could react, she pulled her abdominals closer and tore the head off, a geyser of blood remaining on what's left of its neck before the rest of the body fell, with Miruko landing on her feet and dashing towards a soldier, delivering a combo that staggered it enough for her to punch its jaw off.

As this happened, the herd of demons slowly began to become smaller, and the Archvile took notice of this. It fired off another path of flames, which the Slayer avoided, before summoning up a fire wall to call upon more of its brethren, but Miruko saw this and leaped over the barrier. "Think you could hide?!" She asked rhetorically, kicking it away and disrupting the summoning. The Slayer took notice of this as he decapitated a Whiplash, tossing away the head as he brought out the rocket launcher. Using the lock-on mod, he fired off three rockets at the super heavy demon, causing it to falter and give him a chance to deliver a Blood Punch. Seeing that the summoner was staggered, he then took out the chainsaw, immediately shredding up a gargoyle and two imps before heading up to Glory Kill the Archvile. Though the demon had time to recover, its attempt to claw at the Slayer failed, as the demon killer simply caught the attack. Shocked, the Archvile gave the Slayer the chance to stab it in the chest multiple times.

As it died, the demon resisted to fall, using what left of its power to summon one last demon. As it turned to ash, the fire it summoned formed into a Marauder, who immediately brought out his axe.

Miruko grinned at the new challenge, but the Slayer stopped her with his hand and lightly pushed her back. "Hey, what's the big deal?!" She exclaimed, but the Slayer ignored her, instead running towards his counterpart, who had his shield at the ready. The Slayer fired off a few plasma rounds, which were blocked, but that wasn't the only trick up his sleeve. The Hellwalker fired a grenade behind the Marauder's feet, and the explosion caused him to drop the shield.

Seeing his chance to strike, the Slayer brought out the Ballista, firing it off before quickly switching it back and forth with the Super Shotgun. As he did so, he lobbed another grenade at the Marauder, the continued onslaught proving too much. Eventually, the demon was staggered, and the Slayer took the chance to kick him in the shin, causing it to kneel and let go of his axe, which the Slayer used to decapitate it.

As the dust settled and the remains turned to ashes, Miruko panted to catch her breath, smiling all the while. "Well, that was hella fun!" She exclaimed, but once again, the Slayer ignored her as he walked into the hospital. "Hey, come back here, you got a lot of questions to answer!" The heroine yelled out, quickly following him.

As she trekked through the bloody hallways of the facility, she found that the armored being was kicking down doors before leaving them, as if he was looking for something. But what was it he was looking for?

Eventually, he found whatever it was as he stepped into a room, with her following behind. What she saw was not what she expected. A mass of flesh at the center of the room, small sparks floating above what seemed to be a heart for the core. She watched as the Slayer walked up to the mass, grabbing the heart before yanking it out. There were some screams heard from the thing before it exploded, and everything went quiet.

The Slayer and Miruko looked around, as if expecting there to be something to come out. When nothing did, the Slayer let out a satisfied grunt before he began to walk out. Just as he was about to leave the room, however, Miruko placed her arm on the doorframe, blocking him. "You did some pretty ballsy stuff here, man," She began speaking as her eyes narrowed. "But you did something way too reckless, and you were using those weapons like crazy. I'm gonna have to take you in for a bit."

The Slayer seemed to hesitate for a moment before he nodded, much to the confusion of the AI in his helmet. "Where are you going with this, Slayer?" Hayden questioned, but he received no answer as his host began to follow the Heroine.

Within minutes, the pair made it outside, the police at attention as some of them were pushing reporters back. However, one of them was reporting the events to another hero, Gang Orca, who was pondering over the information before she noticed the Rabbit Heroine.

"Ah! Miruko!" She called out before noticing the Slayer. Her smile quickly turned into a frown as she walked over to the demon killer before she addressed him. "You caused a lot of trouble today, interfering with Hero work. You should know better than to do that, especially since you're a man!" She said.

That last statement got the attention of Hayden, who quickly began to notice something. "Slayer… why… Why are all the people here women?"

Before he could receive an answer, however, one of the officers, Naomasa Tsukauchi stepped in. "Alright, we can discuss this at the station." She said before turning towards the armored man. "However, if you would be so kind, please remove your helmet. It would make calling any relatives easier."

There was a small pause in the air before the Slayer reached up to his helmet and grabbed it by the sides. A small hiss was heard before the helmet unlocked itself from the armor. The Slayer pulled the helmet off, revealing his face to the others, eliciting a gasp from Tsukauchi. It had been nearly ten months since she received the files on him, and only four since the case went cold, but she would recognize that face.

"I… Izuku Midoriya?"

And that's a wrap, folks! I had a lot of fun writing this one, especially since the other stories caused a burnout. One can only write so much of the same thing, ya know! Anyways, yes, to any AO3 readers out there, this story is inspired by "The Heroic Slayer", which the author gave me permission to write my own version of. After the same stories for so long, this is a breath of fresh air for me, and I might continue this soon! Depends on how I feel. I have a couple of ideas that want to get out. Klyju, OUT!