AN: I have a feeling I'm going to have so much fun writing a crossover between my all-time favorite anime and one of my favorite cartoons. Anyway, welcome to Gravity Soul everyone! I will be writing this concurrently with my other crossover Steven Universe Secret Wars though I may have to put one story on hiatus to focus on the other. But those I'll have to worry about later. To clarify, this takes place after the end of the Soul Eater anime and at the beginning of Dipper and Mabel's second summer in Gravity Falls. Now without further ado...

Gravity Soul

Prologue: Of Weirdness and Madness


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Gravity Falls, August 2012

"What?! THE DEAL'S OFF!"

Bill Cipher has finally unleashed Weirdmageddon on the town of Gravity Falls, and he would've spread it across the entire world & beyond had it not been for his old enemies, the Pines family. He was about to kill the twins Dipper & Mabel before Stanford stopped him and surrendered a way to break out of the town and make weirdness go global.

When he entered the mindscape, he discovered that his arch-enemy's brother Stanley had set him up, much to the dream demon's shock. He tried to escape but a door shut behind him as the room started to burst into flames.

"What the?! NO NO NO NO!" he cried out in horror of what fate would befall him. "Oh yeah, you're goin' down Bill. You're getting erased." Stan announced pridefully. "Memory gun, pretty clever huh?"

"You idiot! Don't you realize that you're destroying your own mind too?!" Bill shouted as the room became nothing but a cobalt inferno. "Eh, not like I was using this space for much anyway." replied the con-artist with a shrug. "Let me outta here, let me out!" Cipher howled as he tried to escape, but to no avail. "Why isn't this working?!"

"Hey, look at me! Turn around and look at me you one-eyed demon!" Stan commanded him getting out of his chair to corner the isosceles abomination. "You're a real wise guy, but you made one fatal mistake: YOU MESSED WITH MY FAMILY!"

"You're making a mistake, I'll give you anything! Money, fame, riches, infinite power, your own galaxy, please!" Bill begged as his form began to distort. "What's happening to me?!" As he began changing shape, he recited a backwards chant in a bid to resurrect himself but failed as he turned pure black, reaching out to Stan and cried out "STAAAAAAAAANLEEEEEEEEEY!"

And with that, Stan punched him square in the eye, shattering him into multiple pieces before they all faded away. Turning to a picture of him with his great-nephew and niece along with their pet pig Waddles, he held it close as the fire swallowed him whole. "Heh, guess I was good for something after all." he chuckled in satisfaction.

That was the end of Bill Cipher.

Or so they thought.


South America, May 2013

The Kishin Asura had almost won.

The Death Weapon Meister Academy had lost two of its best meister/weapon teams, all of them lying around the battlefield almost dead. Madness had nearly spread across the world but the only one who dared stand against was a little human girl named Maka Albarn who was ferociously staring him down with her emerald eyes, her fearless glare beginning to make him go insane.

"Don't you get it yet?" the loud-mouthed ninja Black Star said. "Maka may not be a great star like I am, but she's got something amazing alright."

"Maka's strength isn't some special ability, it's more." Death the Kid, son of the Grim Reaper, added. "It's something that can be feared." Maka's weapon partner Soul Eater stated. "It's bravery." the two of them said in unison.

"That's all bravery?" the Kishin wondered growing more fearful. "I don't understand you people! You put faith in something as fragile as one girl's bravery?!" Maka gave him no response, continuing to stare into his three red eyes. "Stop it, don't look at me like that!" he shouted. "How can you be so calm at a time like this?! What's happening, who the hell are you?!"

"I'm Academy student Maka Albarn, one-star Scythe Meister." the girl declared still standing tall against him. "Not what I meant, I'm not asking you your name!" Asura exclaimed stomping his foot like an unhappy child. "You're standing there so calmly! That's not normal, what are you?!" he screamed. "I'm just me, nothing more and nothing less." his opponent answered.

"She's making me nervous." the Kishin said to himself clenching his fist. "But I don't understand why that is, I'm so confused! It's like the feeling you get when you wake up from a bad dream you can't remember. I've had enough of this! You have to die now and I'm going to kill all of you!" he shouted. "I don't have any other choice!" He prepared for another fight with Maka as his own weapon popped out of his mouth.

"Shuujaat." Maka simply said the Persian word for 'courage', which made Asura turn his head downward to her in confusion. "What, what is that?" he asked. "A postcard, with a message." she answered holding a postcard from her estranged mother in her hand. "But that doesn't matter, it's none of your business."

"None of my business?!" Asura said. "How can you talk to me like that?! You insolent-" He started trembling, even more afraid than before. "Oh no! Whatever you're doing, stop!"

"No, I won't!" Maka fired back. "I've come too far to stop now. If I gave up, how could I face the people who stood by me, supported me for so long? They're the reason I'm here, they lent me their courage. Now it's time to use my own. It's time for me to be brave for them!" she said. "That's ridiculous, you don't know what you're talking about!"

"Bravery is my armor, and this is my weapon." Maka declared putting up her fist holding the postcard. It was at this moment Asura finally snapped. "Fool, you really think that pitiful little fist will hurt me?! You'll accomplish nothing, why can't you see how useless it is to try?! You should've given up this fight a long time ago!" He started turning his head still gaping at the girl. "I don't understand anything that's going on!"

"I don't get it." After moments of contemplating her words, his weapon fell out of his mouth. "Why do you have so much faith in her?! She's weak! She isn't special! She's nothing more than a human!" he gasped. "WHAT IS BRAVERY?!"

Realizing what fate had in store for him, Asura let out a loud, nightmarish scream that could be heard for miles. "Kishin, are you ready?! I'm coming!" Maka shouted charging at the monster. "GO AWAY!" Asura howled pounding the stone beneath them to halt her, but she got back up and continued running.

"What's the point in destroying me?! Madness won't disappear just because I'm gone! Another one will take my place! There will be a new Kishin, an heir to my madness! He will reign insanity upon the world just as I have done!" he shouted trying to strike her with his bandages. "That's the way this world will always be! Why can't you see your struggle is pointless?!"

"I DON'T CARE!" Maka screamed at the top of her lungs when she finally got close to Asura. "Stay away!" the Kishin begged as he punched him square in the face. "I WILL DEFEAT YOU!"

Asura recoiled from the attack, but got back up seemingly fine. "You didn't even scratch me!" he cackled madly. "Your fist wasn't even enough after all you fool! There's no way a weak, talentless little human like you could beat me! You didn't stand a chance!" As he finished declaring victory, his face started to break apart like glass. The fractures started growing a brilliant blue as he clutched his own head. "What is this, you just punched me! Your fist isn't a weapon, it's nothing special!"

"Exactly." Maka stated. "Bravery is not special. But that means, everybody has it."

"Everybody, huh?" Asura responded, his voice now more calm and deadpan. "Then it's just like madness." His head finally exploded into a sphere of light encompassing the battlefield.

That was the end of Kishin Asura.

Or so they thought.


White.

This endless void was nothing but white for miles. Nobody knows where it ends or where it even begins. It was devoid of all life whatsoever.

Until now.

Kishin Asura began to reconstitute his form, albeit broken beyond repair. There were cracks all over his body and one of his hands was still attached to his head. He took a moment to examine his new surroundings, wondering where he was now. "W-where am I?" he panicked. "Am I dead? Is this Hell?!"

"No it ain't pal, welcome to the endless void!" a voice called out to him. The voice's owner revealed himself to be a simple creature resembling a triangle clad in a tophat and bowtie but like Asura, his form was heavily damaged. "Oh, my, gosh! It's Kishin Asura ladies and gentlemen, give him a round of applause!" he announced to an invisible crowd that started clapping for him.

"What's going on here, who are you, how do you know my name?! I need answers!" Asura demanded. "Cool your jets triclops, pardon me for being so rude." the triangle said with a hint of sliminess in his echo-y voice. "My name is Bill Cipher, Great Triangle God of Weirdness, Ruler of the Nightmare Realm, professional deal-maker, at your service!"

"Thank you for giving me your name, but that still doesn't answer how you know mine!" Asura shouted. "I know lots of things buddy," Bill stated before his voice suddenly became deeper and images started flashing on his three-sided body. "lots of things."

"Here, wanna see what I can do?" he offered before summoning forth a man on the brink of death, begging for his life. "Please, don't do this!" the man cried before his body went up in flames with a snap of Bill's fingers. "Agh, you're insane!" Asura recoiled in terror of this new being. "That's exactly what this one guy who summoned me said!" Bill replied. "So how did you end up here? I was outsmarted by two old men & their kids."

"I was destroyed by a little girl punching me in the face with courage!" the Kishin replied. "A 'courage punch'? Are you serious?!" the triangular terror started guffawing loudly. "Oh that is just so cliché! Hey, I have an idea. What do you say we team up?" he offered. "Why are you saying this?" Asura wondered. "We actually have quite a lot in common. Beings of ultimate evil with unusual eyes and a burning hatred for children." he explained before putting on an incredibly angry voice when mentioning children.

"You're joking, we're nothing alike!" Asura argued with the dream demon. "I may be insane, but I'm not pure evil! I just want to make the world a better place by showing everyone that fear is completely normal!" Bill immediately shushed him by literally zipping his lips shut. "Oh quit being a crybaby Asura. Is that the way to act in front of your biggest fan? It's all because of you that I decided to obliterate my home dimension and conquer the Nightmare Realm!" he claimed. "Now then, do we have a deal?" His hand was illuminated in a blue fire as he extended it to the Kishin.

Asura glanced towards his free hand and then back at Bill's before smiling evilly. "It's a deal." he accepted shaking the demon's hand while his bandages wrapped around his arm. "Whoa whoa whoa, what're you doing?!" Bill exclaimed. "If I'm going to take revenge, I might as well need a new body!" Asura replied grinning. "Funny you should say that, cause I was gonna do the same to you!" Bill shouted as his new partner's arm started glowing yellow.

The two monsters started screaming as they were pulled together into an orb of light. After mere moments, the orb shattered and out emerged a new being that was basically a fusion of Bill and Asura.

His hair was now a bright yellow with the white lines in Asura's hair now black. The Kishin's eyes now resembled that of Bill's on both his face and hands. He was clad in a red pinstriped blazer just like Asura wore back when he was a member of the Eight Shinigami Legions along with dark trousers. A small portion of his chest was exposed showing a tattoo resembling Bill's bow tie directly below his chin. He had pale grey skin that was cold to the touch and to top it all off, he wore bandages all over him including a group of four sticking out of his back.

Taking a moment to examine his new form, the being that was formed from Bill Cipher and Kishin Asura laughed heartily and evilly, echoing throughout the void. "I am no longer Bill Cipher or Asura! I am now Kishin Cipher!" Kishin Cipher declared with a voice that sounded like the two were speaking in unison. "Look out world, I'm baa-AAA-aack!"


Piedmont, California, June 2013

"Don't worry Mom and Dad, we promise we won't put our lives at risk again again." Dipper Pines said to his parents as he and his twin sister Mabel were at a bus stop headed for Gravity Falls. "I'm still surprised you had such an adventure last summer. Those other parents at the PTA had their jaws hanging!" their father Alex chuckled. "Mostly because they didn't really believe us." his wife Danielle replied before giving her kids a big hug. "Have fun you two, and remember that your great uncles are coming back soon."

"We love you too Mom, and we'll tell everyone at Gravity Falls you said hi." Mabel said. "C'mon Waddles!" she called to the twins' pet pig who immediately rushed to her side. "I still can't believe they brought home a pig." Danielle whispered to her husband. "We lived with Waddles for the past few months, we can still handle it."

"Bye Mom, bye Dad!" the kids waved their parents goodbye as the bus left for the Oregon town just west of weird. "Bye kids! Have fun!" the adults said their farewells as well before the bus disappeared from view.

"Ah, so good to go back to Gravity Falls." Dipper sighed resting on the bus seat. "Yeah, I can't wait to meet all of our friends again like Soos, Wendy, Candy & Grenda, Melody, Pacifica, McGucket..." Mabel began listing all of the friends they made that fateful summer before her brother cut her off. "Hey uh, hate to go off topic but did scientists ever learn why the sky suddenly turned red last month?" he asked. "I dunno. You think that might be connected to all those people screaming bloody murder in the streets?" she wondered.

"Oh yeah almost forgot, Grunkle Stan and Ford are gonna come back from their adventure this summer." Dipper said. Last summer after they saved the world from Bill Cipher, their great-uncles made amends and went sailing around the world like they dreamed of when they were children. "Right, I cannot wait to see them again too!" Mabel exclaimed. "Right Waddles?" her porcine companion snorted in reply.

To the Pines twins, it was going to be another summer of adventure but little did they know a certain shape was plotting his revenge.


Mission Location: Gravity Falls, Oregon

Mission Description: An eyeball-like creature with wings has been spotted in this Oregon town. Hunt down this creature and slay on sight.

Mission Difficulty: B Rank

Special Notes: This creature has been described to petrify those who are caught within its gaze. Student(s) with good timing may be able to dodge it.

Status: Vacant

"Don't ya think this mission might be a bit too dangerous for you?" a boy with white hair, red eyes and shark-like teeth said to a girl dressed as a typical schoolgirl with toupe pigtails. "You may be right, but anything to make you a Death Scythe Soul!" the girl beamed proudly as they took the mission.


Ooh, paths crossing! It's nearly time for the Mystery Twins to come face to face with the Scythe Meister and Weapon! But for now, let us give thanks this Thanksgiving and wish each other a Happy Holidays. TTFN, ta-ta for now!