Disclaimer: Castlevania is (for now) owned by Konami and formerly owned by Koji Igarashi. The Overlord game is owned by Codemaster and Overlord Manga/Anime is owned by Kugane Maruyama, Kodokawa and Funimation

Prelude

Within the Dark ages of man, the monarchy across Middle age Europe is slowly crumbling and began the rise of Feudal Lords who each ruled certain areas of the European nations. This would bring wars within nations out of hatred and greed between the Lords, or Barons as they call them.

The worse of them is called the Black Baron, a man of immeasurable greed and lust for power, who oppressed and ruled his lands with a iron fist, but rumours say that the Black Baron was a practitioner of dark magic and was responsible of luring the nightmares that hid in the dark, such as vampires, werewolves, ghouls and trolls for example plague all across Europe, terrorising the commoners in simple hamlets that forcing them to live with constant fear of the night. To show total dominion and that no one challenges him, the Black Baron sent his dark armies to spill more human blood, which every casualty taints his already dark soul into the point where his humanity is but a fleeting memory.

But as dread and despair continues to plague Europe and mankind, hope is born when an Order of knights and clerics was founded, known to all as the Brotherhood of Light. The Brotherhood started out with 3 warriors who founded this order with the help of an old Italian Alchemist named Rinaldo Gandolfi and an old pagan god named Pan.

With Rinaldo and Pan's help, the Brotherhood have an arsenal of holy magic and weapons specialized in defeating monsters that terrorised Europe, which began the Brotherhood's crusade against the Black Baron.

The tales of the Brotherhood's valour against the Black Baron spread across Europe as well as the light of hope. But that only cause the Darkness to retaliate, the Black Baron was the first lord of darkness, but he was not the last. After the passing the Brotherhood founders, sightings of new Dark Lords continue to spread across Europe once more, but the Brotherhood expected this and are prepared to fight against the Darkness once again.

Through out ages, the Brotherhood of Light has renowned warriors, and one of them is called Gabriel Belmont of the Belmont Clan. He ventures across Europe to find the Dark Lords and vanquished them to rekindle the light of hope to shine on Europe again. But it became a burden and Gabriel retired to become a Baron, not only of the Belmont Clan, but also the famed the Cronquist Clan where he inherited the lineage maternally. Gabriel agreed to take the quest as he might find answers of the murder of his first love, Marie who was found dead in the Belmont household and left the knight distraught at the scene.

The quest led him into darkness, but his spirit stayed strong with the faith of god and hope to find the answers he yearns for and avenge dear Marie. Gabriel was valiant and victorious when he banished the darkness and the evil which lurks within, but the answers he got did not comfort him and broke his spirit in the end.

Europe is at peace thanks to Gabriel but unfortunately it never last when the darkness returns, creatures of the night prey on humanity again, the skies are cloaked in an eternal night, signs of evil returning, a new dark lord has come. The Brotherhood requested Gabriel to ride on again to vanquish this evil again, but unfortunately Gabriel's past battles took its toll on his body and spirit, especially when after the years he is still mourning, not just for Marie but for his new love Elisabetha.

With Gabriel out of commission, many knights from of the Brotherhood went on in his stead, but despite their valour and strength they could not banish this evil for none of them ever return. The brotherhood is desperate, so they come to Gabriel's only son, the current Baron of Belmont, Leon. Despite Gabriel's protest, Leon left his household for he has another reason to vanquish this evil. His beloved Sara Trantoul was kidnapped in the peak of night, used by bait by the new Dark Lord, who's name isn't heard or spoken for many years: Walter Bernhard.

Castle Bernhard: Throne Room (1094)

Up upon the highest tower of Bernhard Castle, the very castle Gabriel once came and slew a Dark Lord, the vampire Queen Camilla. But after Camilla's death, the castle was derelict and abandoned so it would fade away from the mind of men. But the castle's former and now current owner returned when Camilla's death was spread and urged the vampire to return home and spread darkness again.

But to spread eternal darkness Walter involves himself with alchemy, an art which has been the lynchpin of magic and science, which both were considered heresy. Walter obtained the knowledge from his exile from Camilla and able to create a black jewel called the Ebony Stone, which granted him his beloved night. Walter grows even stronger throughout the night, but the immense strength he possesses is not enough to please him as boredom torments him.

To help amuse himself, he lures his victims by kidnapping their loved ones, or tainting their body and soul with the curse of vampirism, prompting his toys to save or avenge them. Many have come, and all have fallen, but still not enough to kill Walter's boredom…until tonight when Leon survived his castle and reached the throne room.

And now in the throne room, the Vampire Walter sits upon his throne with arrogance on his inhuman self, while holding a chalice full of blood swirling in his hand. A vampire with a noble stature, with long red hair and blood red eyes, wearing blood red armour over his black noble clothing with a dark cape over his shoulders.

"Welcome." Said Walter as he greets his arriving quest who has been surviving the castle's dangers to get here. A young man in his early 20s with messy blonde hair, he is wearing a white sleeveless coat with red accents, along with an iron cuirass underneath, black shirt with long gloves and pair of black trousers and knee-high boots. Strapped to his side is a metal crucifix-like item. "I have been waiting, Leon."

The man named Leon walk towards the Vampire while holding the iron crucifix, which the top expends into a 3-metre-long chain with a spiked weight on it. The cross is in fact a modified Morningstar or flail which Leon he held the chain ready for his combat against Walter.

"Walter" said Leon with anger in his voice. "I will never forgive you."

"I see" Walter smirking at Leon, for he knows why Leon is angry at him. "It seems that you enjoyed the gift I gave you."

Leon growled under his breath for Walter is mocking him for what he did to his betrothed, forcing him to take her life before the curse that vampire put on her could turn her into a vampire herself with the cost of her pure soul. Leon calmed down, for Walter is wanted to get Leon angry for it will make him lose his focus. Holding his pride and anger, Leon calmly responds to the vampire.

"Yes" said Leon calmly as he can, but remembering his betrothed sacrifice reminded him of the opportunity. "Thanks for that, I now have the power to defeat you."

"Well, that power is quite something" said Walter as he stands up from his throne. "but I am beloved by the night. And you will taste my power."

"I'll kill you AND the night!" said Leon as he lashes his weapon.

"Interesting" said Walter as he is amused by Leon's confidence, "Now, the curtain rises on this delightful little game.

Walter vanishes from this throne room in a flock of bat, his mocking laugher echoes in the dark throne room. Leon gets ready for his fight against the vampire and waits for Walter to emerge. Walter reappears behind Leon to strike him, but Leon is aware and rolls away, just so that he has enough distance to lash his weapon at Walter.

The long chain flies towards Walter from the lash and the spiked weight shoots toward the vampire. Walter stands there, confident as many tried to strike him but are unaware of the dark magic shrouding him as protection and no mortal weapon can penetrate it.

Suddenly, as the Morningstar's weight meets Walter, the dark magical barrier breaks and pierces through his armour. For the first time for too long, Walter is finally hit by a weapon.

"WHAT?!" exclaimed Walter in shock. Impossible, no mortal weapon can…wait a minute. That weapon…it's the same one that struck down that bitch who chased me off my castle years ago. Gandolfi's fabled Vampire Killer.

"Now, there is nothing left to protect you!" said Leon as he ravels the Vampire Killer's chain and prepares to finally fight against the dreaded vampire. "I will fulfil my promise to Sara now!"

Walter snarls and bare his fangs in anger, but he manages to compose himself and regain his arrogant confidence.

"Not yet" said Walter standing tall and proud but getting ready to fight the young Belmont. "The power is the night is still full. I shall teach you the meaning of true terror."

With a flip of his cape, Walter conjures up balls of dark energy and launches them at Leon, Leon dodges them and lashes his Vampire Killer at Walter. But Walter instantly vanishes in a swarm of bats to evade the attack. Leon keeps his guard up while ravelling the chain and wait for Walter to emerge again.

Walter emerges and held up his cape which he fires out a barrage of fireballs at the young vampire hunter.

Leon dodges a few fireballs while lashing at the rest when evasion seems complicated for him. Leon pulls out small balls of holy water and tosses them at Walter, the bottles smash beneath the vampire's feet and the water suddenly combust into blue flames. Walter hisses at the blue flames and vanishes again to emerge again at a safe distance.

But while at war against Leon Belmont, no where is safe for Walter as the vampire hunter lash the vampire killer at his cheek. Walter snarls at this while holding his bleeding cheek, his eyes glow red in anger and his fangs elongate until they are now an inch long.

"Damn you" exclaims the vampire as he summons a swarm of bloodthirsty bats that flew through the stained-glass windows, a small flock surrounds Walter to defend him while the rest swarm to attack Leon.

Leon is overwhelmed by the swarm but he fights back by twirling his weapon like a lasso, causing the chain and weight to fly around and swat away the bats the fade away the swarm. Many bats remain as they fly far enough to evade the vampire killer, but Leon is now fine and resumes his battle against the vampire.

Walter teleports here and there across the room, evading strikes as he can and attempting to sneak up on Leon as he can. He manages to grab the blonde hunter and bare his fangs at him. Leon struggles to keep the vampire away from his neck, pushes him off and sways him with the Vampire Killer's hilt. Walter snarls in pain and teleports away and appears back near his throne.

Walter snarls as opens cape and launches a barrage of fireballs, also setting off pillars of flame aiming at Leon. The Hunter dodges the fiery pillars quickly with rolls to avoid burns but the evasion is not easy when there are also fireballs flying towards him. Getting desperate he pulls out a few bottles of holy water and splashes them around him to create a barrier of holy blue flames. The pillars of flame cannot appear within the area of the holy flames and the fireballs cannot penetrate the its perimeter. Leon sighs in relief as he is, for now, safe from Walter's fire magic.

Walter snarls at this, but again impressed on how long Leon lasted in this fight out of all the hunters that came here.

"I'm impressed, Leon" said Walter "Out of all the humans that come here, you survived longer than I anticipated. But I think its time to end this little game of ours."

The bat swarm that circles around began to thicken as more bats join in and they started to fly closer to Leon. The holy flames are what's keeping them at by, but they are slowly dying.

"Good thing I saved this for last" said Leon as he pulls out a golden crucifix and kneel on one knee while he prays.

"Christus Vivit, Christus regant

Christus ab omni malo te defendat

Maledicti et Excommunicati daemones"

"Ha ha ha, you think mere words from your pitiful Book can stop me?" scoffs Walter as he commands the bats to attack Leon "I am of the night, no light can reach me!"

The holy flames are slowly dying until they are nothing but embers, the bats took this chance swoop down at Leon, slashing him with their sharp claws and biting him with their long teeth. Leon grunts in pain but he continues to pray, and the cross continues to grow brighter.

"invirtute istorum factorum

Dei nominum"

The cross is now becoming brighter enough to force some bats to distance themselves from Leon, but the hunter continues.

"Mesias. Emmanuel. Sohter.

Sabahot. Agios. Inchiros.

Athanatos. Jehova. Adonai!"

"That's enough!" said Walter as he is now feeling uneasy by this holy light from the cross and has to stop it before Leon could finish the prayers. "I am the NIGHT; NO LIGHT CAN REACH ME!"

"Ubi fuerint haec nomina

Et Digna Dei

Praecipimus vobis

Atque ligamus vos ut non habeatis!"

The light pulses a wave that causes the bats to fly off uncontrollable, shatter the remaining windows and force Walter into his knees. But Leon is not yet finished.

"Potestatem per pesten

Nec per aliquod

Quodeumque maleficium nocere ei

Incantationem, neque in anima

Nec in corpore!"

And with that, a giant blue flame in the shame of a cross emerges with Leon levitating in the centre to mimic Jesus Christ mounted on his Crucifix. The blue firey cross burns brightly like heaven that only it's light incinerates the bats and cause damage on the vampire before it. Walter exclaims in panic and disbelief when the light finally reaches him and inflict all holy damage upon his dark unholy form.

"NNOOOOO!"

The fiery cross dies out, and Leon slowly descends back onto the floor with the now melted crucifix in his hand. Leon blinked and sighed while his vison adjusts from the holy flame's light which obscured his vision. Walter however is on his knees, clinging on whatever un-life he as left in him, but fate can be cruel to the dark as he knows that he is dying.

"It can't be" said Walter in denial of his defeat by a mere human. "This should not have happened!"

"Sara's Suffering and Renaldo's Greif" said Leon softly as he finally avenged the two from the vampire's cruelty and curse. He then approaches the fallen vampire while his Vampire killer returns to its Morningstar form. "Carve them into your cursed body and perish!"

"AGH!" Walter groans painfully as the holy light's attack still burns him both body and soul. "But…with my powers, I will surely come back to life."

Walter started to cough out blood and feel his body slowly decaying into dust.

"I may not obtain the Crimson Stone which would grant me true immortality and dominion of the night's armies. But someday, it will be mine!"

Walter awaits his fate, knowing that he would return and have his revenge, slowly he waits for his body to crumble to dust and die. But suddenly, while Walter still has life left in him, a curved blade from an old scythe pierce through his dying body from behind. This sudden sight surprises both Leon and Walter. Walter turns his head to leer at who struck him from behind. There behind the dying vampire is an old skeleton dressed in a purple cowl and armoured with bony pauldrons with red crystal orbs in between. The purple cowl is open enough for the ribcage to be exposed and revealing a smaller red crystal orb below it. This creature is none other than Death himself.

Walter breathlessly gasp at this as the pain increases in his death.

"No, you betray me?"

"I shall take your soul!" said Death as he rips out Walter's dark soul from his dying body.

"NOOOO!" Walter screams in pure agony as Death purges him of his very soul, increasing the decomposition until there is nothing but dust blowing through the wind. Leon is shocked at this when Death now holds the vampire's soul in his ringed skeletal hand.

"This power I offer to the Lord who wields the Crimson stone!" said Death as he raises the vampire soul as an offering. The soul ascends into the air and suddenly becomes encased by a giant blood red crystal, the crystal absorbs the soul and glows rhythmically, like heartbeats while it slowly cracks like an egg.

The crystal shatters to reveal a figure slowly and gently descending to the floor, Leon couldn't see who it was due to the darkness of the room. But as the figure is on solid ground, the light from the candles made things clear, but to revealing himself to Leon shocked the young hunter.

Before him is a pale young man with messy black hair in shoulder length with a goatee, he is wearing the red armour of the Brotherhood, but has a more dragon motif and with only one dark iron gauntlet. The pale man inhales deep and then exhales smoothly with ease.

"Excellent, I never spent a better night"

"F-Father?" said Leon in shock, he couldn't believe his eyes that the man before him is his own father, Gabriel Belmont. But Gabriel looks younger that he uses to, Gabriel use to be old and weary over the year of grief which took it's toll on his body.

Gabriel turns to his son and smiles at him.

"You never disappoint me, Leon" said Gabriel slowly approaching him but stop when they are at the appropriate distance. "I knew without a doubt that you would accomplish this."

"I don't understand, you tried to stop me from coming here to save Sara." Said Leon "What is going on here."

"I needed a powerful vampire soul, that is all" said Gabriel shrugging his shoulders. "And I already know you couldn't resist trying to save the one you love. Just I tried once…but also failed."

"Are you saying that you used me?" said Leon, feeling betrayed at the fact that his own father manipulated him into slaying Walter.

"Not just you, my son" said Gabriel "Your betrothed, Sara. Rinaldo and Walter. I used all of you, but to be honest *chuckle* I never thought it would go so well."

Leon then noticed something glimmering on the back of Gabriel's gauntlet, a glimmering red stone.

"Is that…that stone" said Leon coming to a realisation. "the Crimson Stone?"

"Ah, you know it" said Gabriel as he showed Leon the famed jewel on the gauntlet. "I impressed. I made Walter's soul mine by the power of this stone. Just like the others claim to be dark lords."

By showing the stone, Leon suddenly sensed the vampire killer's killer intent.

"I sense a rage coming from this weapon" said Leon with confusion. But then he remembered something Rinaldo said to him about the Vampire Killer reacting the inhumane and it's desire to slay the unholy. Then the horrid truth hit him and back off from Gabriel with shock and horror. "No, Father! You abandoned humanity?"

"That's right, by becoming a Dark Lord I obtained eternal life and the army of darkness." Said Gabriel "That was my goal. I was my revenge against God!"

"Revenge against God?" said Leon still in shock, even more after Gabriel's confession of betrayal.

"We have risked our lives for the sake of God" said Gabriel "But God mercilessly took two of my loved ones while I serve him in the brotherhood. The Brotherhood said that their deaths fated and of God's Will. If mortality and death is God's will, then I shall defy them. And I will forever curse and hate him for stealing my love forever."

Hearing Gabriel's confession saddens Leon, not out of pity for his father's loss but the fact that it brought him down of the path of evil just because his mother and his father's first love were martyred for humanities sake.

"Father" Leon said softly, oh seeing his father in this dark fate saddens him.

"Leon, after what you've been through." Said Gabriel "You should know"

"Yes, you're right" said Leon nodding as he understands the feeling of loss of a loved one, and the hatred of the one who took that love away. "I do understand what how you feel…I too"

"Then come with me, my son" said Gabriel offering his hand to his son. "I will give you eternity too, and wage war against God and his puppets together."

"You wretched fool" said Leon frowning at his father and refused his offer.

"What?" said Gabriel, taken back at his son's refusal.

"Is this Marie or Mother would want!?" exclaimed Leon in anger. "The man I know would not love such women!"

Gabriel sighs sadly at this.

"Both Marie and your mother were kind, honourable women" said Gabriel soft when he spoke their names. "They were concerned with me to the very end."

So, concerned that they sacrificed their own lives to keep Gabriel alive and safe, and the Brotherhood along God had the gall to exploit their kindness.

"AND THAT IS WHY I HATE HIM!" spat Gabriel in anger while turning to his son. "Am I wrong? Didn't you defeat Walter with hatred in your heart too?"

"Yes, I'd be lying if I claimed otherwise" Leon groaned as Gabriel spoke true once more, and he's be a hypocrite to deny it. "But defeating him…no, preventing the other to fall from the same cursed fate, that was Sara's dying wish."

Gabriel was taken back by this, but Leon continues.

"Granting my beloved's wish." Leon paused for a moment as the memories of beloved flows in his mind, her sweet smile which lights the darkness in Leon's mind, he will miss that. He continues once more. "That is all I can do to prove my love to Sara. Eternity without her would be nothing but…emptiness."

"Leon…" Gabriel has heard enough and backs away, it is clear what Leon's choice is and he chose humanity despite it taking everything from his son. How disappointing. "I thought you would understand."

Suddenly the first lights of the sun crept out and beams out through the shattered window.

"Dawn is coming" Garbiel mutters to himself before turning to Leon on last time. "Farewell, Leon. We will not meet again."

After that, the man who was once Gabriel Belmont submerges into the darkness by a summoned magic circle.

"Death, he's all yours"

"Father, wait!" said Leon as he rushes for Gabriel before he leaves in the shadows. But suddenly Death soars down and swings his scythe at the young hunter, but Leon jumps back to evade the slash from Death's Scythe. Not only that, Death waves his skeletal hands and teleported him and Leon away from Bernhard Castle and into someplace else.

Death's Domain: Nazarick

Leon has been teleported into Nazarick, the realm of the dead. Both are on top of the highest plateau littered with giant skeletal remains of dragons and wyverns. Leon looks around and notices Death hovering up with both hands on his scythes along with Sickles orbiting around him.

"Welcome to my domain, Belmont" said Death "You will be the fine addition to the undead realm of Nazarick."

Leon lashes his Vampire Killer and charges for the fight for his life against Death itself.

With Gabriel

Gabriel watches the battle between his now former son Leon against Death through a giant glowing orb hovering over a pool of blood. The orb, not only act as the only light source while the wall torches an unlit but also as the Dark Lord's eye to see everything he desires.

"You should've joined me, Leon" said Gabriel sighing in disappointment "I would've brought back your beloved and live eternal with her. But your humanity left you blind and foolish to real power."

Seeing enough, he cancels the vison from the orb and approaches the throne where the room's roll of Blood red carpet leads him to. Waiting him is a small hunchback creature holding a silver platter with a chalice full of blood. Gabriel takes the chalice and drinks from it while he sits on his throne to bask in his glorious night.

"Oh well" said Gabriel as he leans back and enjoys his new life here in his new home.

And where is he? He is at his new domain, or course. High up in the dark mountains overlooking Transylvania a sinister gothic castle stands with dark clouds lofting above it to block all light from shining it. The castle with many tall towers surrounding its tallest keep, the home of the new Overlord: Castlevania.

End of Prologue

Happy Halloween everyone! I hope you enjoy this prologue of my new fic.