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au-mashup-party · 5 months ago

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⚠️—…-Xirustale —…-⚠️

Xirustale is an undertale au by

au-mashup-party (me) on the Tumblr app ONLY! If you wish to draw the story, feel free, but credit afterwards, please and thank you. with that being said, enjoy the story!

⚠️Warning!!!⚠️

This story may contain things that many might find disturbing, or just flat out messed up. Note: This story is not exactly written like other AU’s and is intentionally dark. Viewer discretion is advised… you have been warned.

Once upon a time, centuries and centuries ago, Empress Charla Corrupto gave birth to three sons. Their names were Xiro, Xelter, and Xirus. The Corrupto Family was known for being the wealthiest and possibly most powerful family in the multiverse, and have been for many generations. Especially Emperor Xavier Corrupto. The emperor was feared by everyone at the time, monsters, humans, nobody dared to suffer his unbearable wrath.

The boys were each named after a god of the Lost Era. With titles as important and sacred as those to their family, Emperor Xavier had huge expectations for his sons. Empress Charla was against training their children at such a young age, but the king insisted that this was for their own good. One day, Emperor Xavier discovered something special in one of his sons, Xirus had turned out to be an Omnipotent, which meant his power had no limits. That meant he could continue to grow in strength as he pleases with the endless potential that he had.

Discovering that one of his sons could possibly match up with the prophecy of a reincarnated Omnipotent God, he swore to make Xirus his number one heir into a powerful ruler.

Of course that came with a huge 360°, the fear of someday being overthrown by his own son. The full power that could intentionally be unlocked, the kid will be unstoppable, he would kill everyone that stood in his way. He would become the monster everyone feared in the legends.

The Omnipotent of Chaos.

Of course, that would be silly, Emperor Xaiver thought. What type of destruction could this child possibly cause? He wasn’t really THAT dangerous…right? Xiro never thought too much of his brother being an OP god, in fact, he found it kind of cool that his brother could be the man in the history books.

Xelter of course, had always been jealous of his brother Xirus. He didn’t find it cool or wasn’t in deep awe like everybody else on the Corrupto Spaceship were, he saw it as as a stupid cheat code to get stronger quicker, meanwhile, he had been training his entire childhood with little to no respect from anyone. He hated his brother with burning passion, if anyone was to be the next Empeor of the multiverse, it was to be HIM.

Xirus didn’t care, however, and loved the praise and attention he had received from the subordinates and the citizens. One day, however he snuck to his father’s room only to find a book of forbidden techniques, in which the emperor had been secretly using on his son to keep him in control of his mind.

The child didn’t think too much of the book and was about to turn and leave, until he found a note under his father’s pillow, evidence in which his father wanted to have him sealed away in the void for eternity. Xirus couldn’t believe it, after all this time, abiding by his father’s rules, his father was trying to get rid of him for good, simply for being stronger than him.

This made him livid, he also assumed that his mother was in on the plan as well, since he had always noticed she seemed a bit afraid of her children’s power in general. He had never felt so betrayed in his life. He took the book and began to look through it closely this time, finding techniques that were forbidden for a reason, he went through the list intrigued, a sadistic smile growing on his face. Eventually finding some techniques he found cool.

Blackhole Star: Instant Travel. Time: 1.5 seconds.

The Corruption Touch: A puppeteer technique, control anyone to your will with a single touch, or if they touch you by mistake. It works just as well on gods. The person who has been corrupted will lose every sense of themselves and will only follow your lead. Time: 3.9 seconds.

Boop: A odd name but a deadly technique. Can disintegrate anyone’s body from the inside and cause them to explode. Time: Instantly.

Ctrl Alt Delete: A genocide technique, can eradicate any mutiverse in sight, no matter which one it may be. Time: 5.4 seconds.

Otherworldly Transportation: Similar to the Blackhole Star technique, but allows you to visit the real world, different fandoms, etc. Time: Instantly.

Puppet Eyes: Simply able to control anyone just by looking at them and controlling them with your eyes. Time: No limit.

Omni Blasters (Unlimited): Technically Gaster Blasters, but you can summon as many as you like. Time: Instantly.

All of these incredible techniques, these beautiful creations crafted by the gods themselves. Xirus couldn’t help but wonder why his father was keeping this from him. But that didn’t really matter at this point. He trained himself every day to master each technique with ease. Within the next 100 years he would have his sweet revenge. He would show them all the real power of a God.

Timeskip to 100 years later

Xirus was crowned emperor and his father hosted a coronation to celebrate. Although his father forgotten about the book and what he had almost done all those years ago, Xirus was still not over it. In this current time he wasn’t ruling over just the outcodes, but the incodes to. And over the past 100 years, he had really grown to hate the mortals just as much as he hated his father.

He saw them as nothing but selfish, greedy, irredeemable weaklings who did nothing but killed each other and start wars simply because they knew they could. One day he had enough of watching the world go up in flames and decided to put an end to these worms by traveling to earth and causing a worldly genocide. Killing every monster, human, man, woman, child, it didn’t matter.

He had always been focused on bad apples and never bothered to acknowledge the good ones, some that could’ve potentially saved his outlook on the world. This broke him. He was starting to enjoy hearing the screams of the weak, the cries, the begs for mercy. But this was the last straw, the last bit of remorse in him dried up like a shriveled raisin. He became the monster everyone feared in the legends….

Empress Charla was the first to discover what her monster of a son had done with her universal sight seeing powers. She cried, realizing she failed her son. And now their family was forever broken. Before she can tell anyone else what he did, Xirus activated puppet eyes and had her kill two guards in such a gruesome manner. He feigned horror as soon as his father entered the room. Labeling his own mother as a traitor who’s gone psycho and needed to be stopped.

Xavier with genuine horror and disbelief on his face, was absolutely speechless. He was oblivious to the fact that she was under their son’s control. Xirus begin to put his plan into action and ordered the other guards who just entered to have his mother killed by morning as she couldn’t be “saved” anymore.

Of course they were hesitant because this was the empress who they have served for over a decade, then again, they weren’t here to question, they were here to follow orders. The next day she was killed in front of everyone in the empire. Xirus showed absolutely no empathy or remorse for his actions. Of course everyone else couldn’t believe what had just happened, the rumors of the empress killing two guards spread like wildfire. Some refused to believe that she could possibly do something so… horrific.

Xiro and Xelter had watched their mother die in cold blood and their brother was just smiling like this was some type of sick joke. Xelter didn’t wanna believe the rumors, but sadly, the weight was too much for him to bear. After that horrific day, nobody was allowed to speak of what happened, or else they would meet the same fate. So Xiro and Xelter were forced to keep it to themselves.

Eventually, everybody moved on. As if this was just a sick dream. However, the once mighty emperor Xavier would never forget what happened. In fact, the trauma was so hard to cope with, it ended up driving him to the brink of insanity. Xirus saw this as a moment of vulnerability, and decided to put him out of his misery.

“Poor father. You should’ve known that someday I would find out about you sealing me from existence completely. All because your pride couldn’t handle me being more powerful than you. Hm? You don’t know what I’m talking about? Heh, it seems old age finally caught up with you, you’ve been forgetting a lot of things lately. Well, in a couple more seconds it won’t matter anymore. You lost this game of war the moment you believed you ever had a chance of claiming victory.”

He ended his father right there and then. Soon after he knew his empire would start questioning where the previous emperor was and would start to get worried, so he took matters into his own hands by erasing everyone’s memories on the ship to believing his father never existed to begin with, as well as his mother.

He decided to leave the AU Xirustale behind him as it was no longer worth anything to him, his loyal soldiers following behind. This opened his eyes to endless possibilities. He had a whole world out there to explore now, but not just for bird watching. He wanted everyone to know the name which was Emperor Xirus Corrupto. With his growing empire, he manipulated millions of strong individuals into joining his forces. He was growing fast by the day, it was hard to tell how many soldiers he had working for him.

He convinced strong entities and anomalies such as himself to becoming allies with him. Such as: Error 404, King Mutiverse, Error, etc. He became unstoppable, he became what everybody feared in the legends of his AU, he became the monster his father feared he would be. He became the monster that would change his brother’s perspective on him in general. And finally, he became the monster known as-

THE OMNIPOTENT OF CHAOS!!!

The End: The Corrupto Family’s Story.

(the remake of this story took me so long ugh-)

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