Hello. This is a challenge fic from altenativefuturefan27. First time accepting one I want to give it a try. So, this is a Berserk X Campione! crossover in which Guts kills the Idea of Evil and gains its Authorities before being ejected into the Campione! universe. He will kill other Heretic Gods, some from the novels, others not. I have two down for sure, both not in the novels, but we'll see how it goes from there. I'll also post Guts' stats and such at the end of the chapter. Without further ado, let's start! This will be my longest prologue chapter too!

Also, I'm issuing a demand for there to be more Berserk cross over fics! There's only 25 (and one's in French). Please people, if you're a Berserk fan, have a heart and publish some stuff!

Chapter One: The Next God Slayer

It was quite a sight for Guts. Standing, well floating, in front of him was the Idea of Evil. However, once it was full of vigor, acting like a beating heart, pumping casualty in and out of itself, and now it was dying. The massive tubes that pumped the casualty were not doing such, instead limping, without any intention of resuming its function. The heart itself looked like it was beginning to shrivel, look a human heart slowly being drained of it's blood and moisture. To this horrific sight, Guts could only smile.

Guts smirked at the defeated god, but he honestly wasn't doing much better. When Guts invaded Falconia to get to Griffith, he literally fought everything the world, both the physical and astral, had to offer. Soldiers of differing ethnicity loyal to the messiah Griffith; every, freaking apostle there was, all loyal to the God Hand Femto; and then the spirits of the dead, deciding to join in the fun, possessed some townspeople and started wreaking havoc. At this point Guts didn't care except for taking down Griffith, which is why it came to no surprise that when he entered the throne room, the Apostle Elites were there while Griffith wasn't. Preparing to fight for his life, Guts was surprised when the Skeleton Knight entered the fray. Determined to see his revenge through, the undead warrior opened a path to where Griffith, no Femto, resided. The Apostles, especially Zodd, tried to stop Guts, but the White Knight held them all off. Not really caring how the Skeleton will end up (not that the Bag of Bones would do the same anyway), Guts entered the portal, leading him to God Hand.

It turns out that when standing on the plane of existence the five angels/demons are on, they aren't that omnipotent. The small one fell first, next the fat one, and then the woman (Guts took as much pleasure killing her as she did being killed). When Femto and the other one, the leader, Guts assumed, were left, things got chaotic. Forced to rely on his armor's powers, Guts managed to defeat them both, but managed to recover in time to see Femto die. In those last moments, he saw a smile, a smile that belonged on his friend Griffith, not this demon he was reborn into. With a small swing, Guts snuffed out the life of the last God Hand... and things went to Hell, literally. The entire plane of reality Guts was standing on collapsed beneath him, pulling him to the Idea of Evil in all its glory. Realizing that this thing was the cause of everything that went wrong with his and his friends' lives, he attacked it. This brought confusion to Guts, as a simple swing of his sword brought the giant heart to the destroyed state it was in now.

"Not so tough now, are ya?"Guts said, floating in front of the dying entity.

"I was...doomed to this... when you entered... Falconia, mortal." The Idea struggled to speak, as if these were its last words which they probably were. "I am... what humans wished for: A reason... for their suffering. I did... what I did... because that's the task... I was given."

"Well I certainly didn't ask for it." Guts replied. "I know what's caused most of my suffering: me. The stuff that isn't, I work through, I don't look for someone to blame."

"Indeed. Perhaps... that's why you... achieved the impossible." The Idea answered. "My role is finished. Humans no longer... need me to suffer. They have... you."

Guts raised a brow at the statement, but then thought back to how from the other side's point of view, he basically slaughtered people and went after their savior. Guts mentally shrugged, if people wanted to blame him, they can go on ahead.

"You, who have... brought about my demise... heed this. You're journey is not over. You... who have killed me... has taken my... Authorities as well. I willingly...give them to you... in one selfish act."

Guts felt slightly taken aback. Authorities? Relinquish? There was something going on here he didn't know about.

"I will send you to a... new world. One containing those like you... and not like you. There, you will see... the fruits of your labor. Farewell, Defier."

"What?" Was the only thing Guts could say as all the valves and tubes suddenly came back to life in a final act of defiance. With a great inhale, the swirling mass of energy and casualty surrounding the Idea and Guts was sucked into the heart before one valve pointed itself at Guts.

"May your journey...bring you to ruin." Was the last thing Guts heard as a mass of energy blasted him away. Its role fulfilled, the Idea shriveled away to nothing, waiting for when humanity called upon him again.

"The Hell?" Was the first thing Guts said after waking up. The last thing he could remember was the Idea of Evil using the last of its strength to blast him... to a new world if he heard right.

"Hey, relax, you're still recovering." A male voice said. This caused the opposite to Guts, causing him to immediately straighten himself. He looked around with his only good eye to find... nothing. Everything was mostly mist.

"The Hell am I?" Guts said out loud.

"Right now? You're no where. In-between one world and another. I managed to catch you before you ended up entering my world." The voice answered.

"Who are you?" Guts asked. Standing up, he made out the body of another person, the voice's owner he believed.

"I'm a god of my world, or at least was." The voice said. With a snap of his fingers, two chairs materialized. "I suggest we sit down for this, saying everything might take a while."

"Then tell me what I need to know." Guts said roughly. He removed his Dragon Slayer from his back (glad it was there in the first place) and sat in the chair, hearing the groans it made under his weight.

"A man of action I see." The man sat down as well. "Should've been obvious, but you remind me of my brother. 'Thinking ahead is for those too slow to get ahead' he once told me. Ah the nostalgia." The man shook his head. "Enough about that. Right now I need to explain mainly three things to you: Heretic Gods, Authorities, and Campiones. Let's start with the Heretic Gods." The man began and Guts knew he was going to regret this.

"Understand now?" The man asked.

"So let me get this straight: There are tales about gods and spirits which said beings can escape from to cause havoc. It's also possible to kill them and those who do are rewarded by this Pandora goddess with an Authority of the being."

"That's about it. You're a special case though. The god, the Idea of Evil as you call it, willingly gave you all of its Authorities. Pandora isn't happy about that, because now you've become a Campione outside her control."

"Is she trying to build an army of Campiones or something?"

"Nothing like that." The man waved a hand in front of his face for emphasis. "She's just one who prefers fair play and worries you'll now cheat other Campiones or potential Campiones out of their kills."

"I wouldn't exactly be interested in doing something like that." Guts replied. He was starting to get restless now.

"I know, just prove it to her and you'll be safe. I suppose it's time to send you to my world." The man stood up so Guts opted for the same decision.

"You never said your name." Guts pointed out.

"You never asked, should've thought of that before, didn't ya?" The man said as a flash of light enveloped Guts, forcing him to shield his eye, before fading away. Opening it, Guts saw that he was now standing on a trail with a forest on one side and a castle on the other.

"If I wasn't told beforehand that this was my world, I would've thought otherwise." Guts mused, looking at the castle, fort really.

"Halt!" A voice said. Guts turned around to see a group of soldiers on horseback being followed by more soldiers on foot. "This road is off limits by order of the king!"

Guts wanted to make a snide comment, but figured that it might be smarter to play it safe instead. "On what grounds?"

"Why, because of the war of course!" The leading soldier, the captain, Guts assumed, said with shock. "Ninety-two years our great country of England have fought against the kingdom of the French. Now we march to aid our brothers on the battlefield against the French witch and her ways."

Guts raised an eyebrow at the 'French witch' part, but decided he'll learn more about it later. "Need a hand with that?"

"What? Are you a sell-sword of sorts?" The captain asked. Guts nodded. Not a complete lie, since he was a mercenary for the better part of his life, and even after that he simply wandered around, except he did his killing for free.

"...Very well. You'll receive payment after your first battle. Go join the others in the back." The captain said before pulling on the reins of his horse, urging it to trot along. Guts stood to the side and looked for where a group of people wearing mismatched clothing and armor were in the column and joined them. Apparently the mercenaries were placed right behind the squires, probably to irk some of them.

"Hey mister, where's your sword?" A young voice asked. Guts turned to see a young boy walking in front of him with his head turned towards Guts.

"Just keep looking forward kid." Guts said. He really didn't feel like dealing with children at the moment (Isidro was difficult enough despite the fact he could take care of himself if he only tried).

"Don't be mean now, it's just a question." The kid said, with his head forward now, but his eyes looking back at Guts.

Guts sighed. "It's on my back. Happy now?"

"Oh, so it's a great sword then? A bastard sword? Will you show me?" The kid said.

"You'll see it when the fighting begins. Where are we going exactly?"

"Oh, we're going to a redoubt. Apparently the French witch took out a lot of the soldiers so we're going there to support it until more arrive to replace the dead ones." The boy replied.

There was that French witch again. "Who is this 'French witch'?"

"You don't know? Her name is Jane, wait no... Joan. Joan of Arc is what the French call her. They say she's a messenger from God, but that's a lie since God is backing England, the priests said so." The boy said with conviction.

Guts found it amusing how similar the Church was here compared to his world. If this keeps up, he might forget about the fact he is in another world. "Why is she called a witch then?"

The boy's face darkened a bit. "We've been having difficulty defeating her. Before she came, we were winning, but when she appeared on the battlefield, it was if every soldier France had suddenly fought as if hexed into being unstoppable. I'm honestly scared how such a person can do this."

Guts thought back to the witches of his world, but he then thought of the Idea of Evil's last words. More like him, huh? If this Joan has killed a Heretic God, then it's possible only Guts can stop her. As another Campione and as one who can defeat a god. Then again, why must he stop her? He no longer has an obligation to fulfill. No vengeance to carry out, nothing.

A growl and a rattle of chains echoed in the back of Guts mind. Ah, that's the reason. Fair enough, Joan will know what it's like to face a true 'messenger of God'. The message being 'go to Hell' of course.

This was completely unexpected.

When the boy said the French soldiers became unstoppable, he simply thought of it as a morale boost, but this... the Frenchmen were literally throwing themselves at the redoubt. Going so far as to try and punch the dirt and stone walls. Some were even managing to do that. Guts had a feeling that this might be what it's like to be on the spectating side of his Berserk Mode.

"Push forward! Drive out the English!" A female voice said, followed by a chorus of battle cries and thuds as the walls were finally giving in.

Seems like Joan was here for him. Grinning, Guts placed his hand on the hilt of his sword, watching carefully as the stone bricks of the wall were being pounded out with each thud. A few surviving soldiers were also here, but many of them dropped their weapons to run away. Smart, if it wasn't for the chance that the French had this place completely surrounded. A brick finally fell out of the wall and immediately Guts hand tightened around the sword handle as he brought it down. Almost at the same time, the French soldiers busted through the wall, one heading straight for Guts, unaware of the metal slab coming down on him. Steel met flesh as the solider was split in two.

"Come on." Guts said, placing his Dragon Slayer on his shoulder, smirking as the soldiers suddenly became cautious. "Your 'messenger of God' wouldn't be happy if you stopped now, right?" Guts could almost laugh at how easy it is to rile these people up, but this wasn't the time to laugh but to kill, and killing Guts did. It reminded him of the time he killed a hundred men, but that was before he got the Dragon Slayer and he was going against regular mercenaries then, not crazed soldiers.

"Stop!" A female voice called out. Guts pulled his sword out of the wall after he impaled one of the soldiers. Looking around, he realized he killed about half of them and wasn't breaking a sweat. All of the French troops turned and kneeled as an armored soldier on horseback entered through the hole in the wall.

"Joan of Arc I presume?" Guts asked. The boy said that Joan was a peasant girl before a soldier, but the attitude she carried spoke otherwise.

"I am, and who are you to defy the decree of God?" Joan said, getting off her horse and taking off her helmet, letting some of her short, blonde hair flow out.

"Someone who's proven there's no need to follow it." Guts replied. He's never had a witty tongue, but when it comes to God and all things religious, Guts is completely ready to give a snide or cruel comment.

"A heretic?"

"A learner."

"Of what?"

"God's truth."

Guts could keep this up all day. While he didn't know how different or similar the God of this world is compared to his world's, the similarities prove that it wouldn't be a stretch to believe this God at least has similar purposes to the Idea of Evil.

"No one can know such a truth. Even I, who has seen visions, don't know the motives of God." Joan said.

Guts inwardly frowned. That statement reminded him of Farnese back when she was a Holy Knight, one who steadfastly believed in God. Deciding it was finally time to learn the truth, Guts spoke. "Which one?"

"What?"

"Which Heretic God did you kill?" Guts asked again. Either Joan was using an Authority to make all these soldiers fanatic, or someone else was.

"Are you speaking of the demon?" Joan asked.

Demon? That's probably it. "Yeah, that one."

"Called itself Lamia. Might as well have been a spawn of Lilith. It was the trial God sent before me to prove myself to liberate France." Joan said.

"And the Authority you stole?" Guts said.

Joan looked taken aback at Gut's comment. "You. You've done the same also, haven't you?"

Guts smirked. "They're not demons, simply stories come to life. I just happened to kill a real being though. I killed God."

"Heresy! Complete heresy!" Joan raised her arm and Guts saw for a moment that her eyes became serpentine. "Soldiers, charge!"

The French troops complied as they assaulted Guts in a mad frenzy. Guts simply smiled as the slaughter resumed. It was almost peaceful for Guts. The carnage around him as he killed soldiers one, two, three, and even more with a single swipe of his sword. The soldiers fought more like animals, given the crazed looks they all had on their faces. Each of them attacked Guts with no regard for their own well being, not that Guts cared. Even if Joan was 'motivating' them to fight like this, they were still the enemy. As the last one fell of Guts' sword, the warrior turned towards the holy maiden with a smirk as blood not his fell down his face.

"I'm surprised you never considered the possibility that someone besides you has inhuman powers." Guts said as he placed his sword on his shoulder. "The only leading skill you have is that Authority of yours."

Joan's face sported one of anger before becoming calm again as she drew her sword. "I might prefer the standard to the sword, but it doesn't make me lacking. I shall defeat you, heretic, and prove who is God's chosen."

"Never said I was chosen." Guts replied as he prepared to fight. This will be his first fight against another Campione, and he remembers that guy, or god, said how besides Authorities, Campione also become more powerful overall. Well if their strength is below an Apostle's then Guts can do this easily.

Joan immediately rushed Guts with her sword held high, putting Guts on the defensive. While her strikes weren't strong, the speed with which she struck was nothing to joke about. Guts managed to land a kick after parrying one of Joan's blows, sending her back into a wall. Seems like offense and defense aren't increased in becoming a Campione. When he saw Joan come out of the rubble unharmed, Guts smirked. Apparently durability was though.

"You will bow to God's commands!" Joan said as her eye became like a snake's again. "[Serpentine Frenzy]!"

"So that's your-" Guts couldn't finish his statement because the moment he looked into the reptilian gaze, he suddenly felt a lose of individuality and felt a voice echo "Obey, obey, obey!" over and over again.

"Just give in, it'll be easier." Joan said, in an almost caring tone.

"N-no way." Guts managed to say. The struggle was immense. It felt like something was trying to grasp his very mind to make him obey. That's when he could hear a growl in his mind, followed by a bestial roar, forcing the feeling out. Heh, seems like the mad dog Guts had in him has purpose even now.

"Impossible! To defy a gift from God himself!" Joan said surprised.

"Hate to break it to you, but..." Honestly, Guts didn't. He'll enjoy saying this. "That gift didn't come from God, you stole that ability from Lamia most likely. Nothing more."

Joan frowned and pointed her sword at Guts. "Nevertheless, I will defeat you."

Guts sighed. As fun as the battle was, it was obvious Joan's shaken beliefs will make the whole thing pointless. "Just leave, keep this up and you're going to lose." Guts blinked. He felt something in what he said, especially at the 'lose' part. What was that exactly?

Joan gripped her sword tightly before charging at Guts again, but unlike before, this attack was mindless, holding nothing of the previous finesse the previous charge had. Joan raised her sword to strike Guts, but instead of bringing his sword down to strike, he moved his left arm, his metal one straight at Joan. Metal hand met metal blade, causing the sword to break in two, the handle-less part soaring pass Guts.

"Just leave." Guts repeated. "I said you will lose." Guts felt it again, something was different in his words. Was it one of his Authorities?

Joan tremblingly placed her broken sword back into its sheath as she strode back to her horse. Before getting on she glanced back at the triumphant swordsman. "Don't think this is over, heretic. I will show you the wrath of God." Joan got back on her horse and placed her helmet back on. "Till we meet again."

Guts watched as the Holy Maiden of France left the redoubt, English and French corpses everywhere. Despite how Guts killed nearly all the invaders, this redoubt has still been destroyed, meaning his side lost. Scratching his head, he figured he might as well find some stuff around the place and take that with him.

"Y-you drove them back." A voice said. Guts turned to see it was the kid who Guts walked alongside on the way to this redoubt. The young squire went to his knight before the battle started so the two haven't seen each other until now. "You defeated the Witch of France."

"Maybe, but this battle is still a lost." Guts replied, looking between some crates and finding a sack of food rations. "This redoubt is destroyed, so even though I defeated them, it's just a stall until Joan can get more troops."

"I-I guess you're right." The kid said dejectedly. "Where will you go now? I checked, we're the only ones alive. Even my knight is dead."

"Don't know." Guts replied. He opened a barrel to only find gunpowder in it. Shrugging, he opened one of his pouches to refill it.

"Could I come with you?" The boy asked. "Might be dangerous for a little boy all alone. There are bandits."

Guts sighed. "Until the next city. Afterwards, I'm dropping you off."

"Actually, could you take me to Italy?" The boy asked.

Guts looked back. "Where's that exactly?"

"You don't know? Here." The boy said. Guts watched as the boy ran over to a ruined table (from the damage to it, probably caused by Guts himself) and picked up a large, rolled up parchment. Lying down, the boy unrolled it to reveal a map. "This is Italy." The boy said, pointing at a small peninsula.

"And where are we exactly?" Guts asked, but he had a sinking feeling.

"Around here." The boy replied, pointing to a spot far to the northwest of where Italy was.

"It'll be a long walk." Guts replied. "Why do you even want to go there?"

"I heard Italy is becoming a center of learning, and I want to become someone famous. Study law and such." The kid replied.

"Sure thing kid." Guts said, resuming his scavenging. He found a loose brick with some gold coins stashed behind. Probably someone's gambling money or something, they won't be needing it now anyway.

"Hey, stop calling me kid! I'm nineteen you know. My name's Peter, but when we get to Italy, I plan on changing it. Piero maybe." The kid, Peter, said.

"Sure." Guts said, standing up. There might be some more stuff in other places of the redoubt, but what he has should be enough to reach the next town. Walking outside, Guts was followed by a 'Hey, wait up!' from Peter as he noticed a black horse remained tethered to a spoke in the ground. Must've been left by the French soldiers. Untying the horse, Guts got on the saddle and looked back at Peter. "You coming kid?"

"I said my name's Peter." Peter's voice sounded angry, but the smile gave him away. Hoping on, Guts ordered the horse to start trotting down the road.

"Peter."

"Yeah?"

"Do you know how to get from here to Italy?"

"Nope."

"Shit."

"Yep."

Guts sighed as the horse continued to go down the road. He couldn't help but think back to Joan, and how he felt something when he said 'lose'. Not just that word, but the phrases that implied she will lose. Guts knew it was an Authority, but what exactly?

"[Casualty Conflict]"

"What?" Guts said.

"Something the matter?" Peter asked.

"No, nothing." Guts said. What was that voice, it was male definitely.

"Glad you could hear me. It's me again."

Who? Oh wait, that guy from before Guts woke up here.

"Yep! Got it in one, and yes I'm reading your mind. I'm in your mind in fact."

Great, just great. What does he want now?

"Just thought I'll explain your current Authorities to you. Pandora's still mad at you so I don't think she'll be helping you. Until she cools down, I'll handle your Authorities for now. Don't worry, that won't mean I'll be sticking around. I don't even need to read your mind to know what you're thinking."

Guess that's a small blessing.

"So mean. Anyway, you got a few Authorities from the Idea of Evil. The one you used by accident was [Casualty Conflict] which alters the future.

[Casualty Conflict] huh? Doesn't sound all that powerful.

In reality it's more of a long term effect type. This Authority alters the future by creating the possibility of what you decided. While it's not definite, it can now happen.

So, if 'lose' to Joan was the possibility, then...

"Yep, you just created the possibility that she'll fail. Way to go. While this isn't really a combat Authority, if used correctly, it can be a tide-turner."

Thinking about it, Guts had to agree, despite the fact he wasn't one to use such tactics. What about the others?

"I was planning to explain them when you use them, but if you want to hear of them now... do you have time?"

If it was possible to mentally raise an eyebrow, Guts just did.

"Gotcha. Well let's start..."

And done! So brownie points to anyone who can figure out who the god is (should be easy) and who Peter is/will become (might be hard, there's no Wikipedia page just for him. Learned of him through his son).

Yes, I did make Joan of Arc a Campione. Slayed Lamia, a monster of Greek lore with a woman's torso and snake's tale. Devours children, drinks blood, and seduces men. Joan gained the Authority for the third thing. Also, yes, I did imply that Guts caused Joan to 'lose' (i.e. be captured and burnt on a stake, don't blame him for it!).

Guts and Peter are now going to Italy! Remember, Guts is a Campione, so he'll be living through a lot of events in Europe (if, of course, he decides to stay in Europe).

I'll be posting Guts' stats below:

Original (not Authorities):
Dragon Slayer: A slab of metal too large to be considered a sword, this blade is the main of Guts and the strongest in his arsenal. Created to live up to its name, Guts has used this weapon to kill entities far more powerful than a dragon. Exists in both the physical world and the astral/magical world. Has increased power against those of draconian origins and nullifies abilities and authorities from/of dragons. Capable of damaging enemies without a solid or corporal form (i.e. spirits or living wind).

Brand of Sacrifice: Attracts spirits and divine creatures to Guts, stronger at night. Capable of freeing a Heretic God from their myth if the location Guts is in is closely related to the God or Guts is in possession of an object connected to the God. Chance of freeing varies.

Berserker's Armor: Cursed armor made by Dwarves, has a natural resistance to Earthly beings (i.e. Gods of Earth). When activated, Guts trades all sense of reasoning for the removal of pain and his natural limiters to achieve new levels physical abilities. In the activated state, Guts can be classified as Divine Beast.

From Idea of Evil:
Reason to Suffer: The Idea of Evil's reason for being created, whenever strife comes upon people, they will blame Guts regardless of level of involvement or role in situation. This will range of directly blaming Guts to speaking of tales and rumors about the vile 'Black Swordsman'. Will not affect people who have befriended Guts prior to disaster unless they are a direct victim.

Casualty Conflict: Guts is capable of manipulating future events of the world to an extent. This is done by Guts adding a possibility to many of the outcomes that can happen. If Guts chooses a result that already exists, then the chances of said event occurring increase.

Gift of Ascension: Guts is capable of bestowing others with power and strength up to rivaling that of a Campione's for a certain amount of time. However, the amount of power the person receives depends on their humanity. The more power they choose to receive, the more inhumane they become during the usage of the power boost. Guts is able to use and deactivate this whenever he wants, but can only be used with a maximum of five people.

That's all for now! See you next time!