Prologue

Kiln of the First Flame

"Rias, you sure this is a great idea?" Rias' queen, Akeno Himejima asked her king.

Rias Gremory didn't say anything to her queen, as the two reached a fog like door. She then placed her right hand on the door, before being sucked into the next room. When she was inside the room, she found a giant humanoid figure, wearing burnt knight armor. The figure was facing away from her, staring across the destroyed landscape of the once Klin of the First Flame.

"Hello, Syth," Rias said, making the figure turn around to look at the Devil. "Long time, no see. Right?" Instead of answering Rias, Syth, or also known as the Soul of Cinder walked towards her, before stopping at the bonfire with sword place it.

Syth then grabbed hold of the sword's hilt and lifted towards him, showing the broken and twisted blade of the greatsword. Once out of the bonfire, the sword then burst into flames. He then pointed it a Rias, making her just smile at him.

"Still angry about the war destroying Anor Londo?" Rias ask, only to answered with Syth charging towards the woman with his sword at his side.

When he reached Rias, he lifted his sword above his head, before swinging it down on her. When the sword was about to hit Rias, it was soon blocked by a pair of twin swords. Syth look down to who block his sword and found Rias' knight, Kiba was blocking the greatsword.

When Syth saw Kiba, he lifts his greatsword up, before sheathing it. Once Syth sheathed his sword, Kiba did the same with his two swords, making them disappear into thin air.

"Kiba," Syth said, in a low growl.

"Syth. I see you are still alive." Kiba said.

Syth ignored Kiba's comment and turned towards Rias.

"Begone, Devil. Your kind is not welcome here." Syth said to Rias, before turning away from the three Devil and stare back at the land of the Kiln of the First Flame. "Since the death of Gwyn, both Angels and Devils are banished. You have brought destruction upon this land."

"Syth, we are only here for the Dark Sou-" Rias was then cut off by Syth.

"The Dark Soul?" Syth asked as he raised his hand.

Rias looked at Syth's hand, seeing a small spark of a flame floating in his hand.

"That's it?" Akeno asked once she arrived into the area. "I thought it would be bigger and more… Darker."

"Looks can be deceiving, Akeno," Rias said. "This… 'artifact' is much stronger than any Sacred Gear out there."

"Scared Gear? Those little toys that were created by Andre?" Syth asked. "I thought Andre got rid of those things."

"Andre? Who is Andre?" Akeno asked.

"Andre, of Astora. He's the creator of the Sacred Gears." Rias answered. "He was then betrayed by God and his Angels, who stole the Sacred Gears."

"Look who remembers their history." Syth commented. "Now, Gremory, leave this place."

"I'm not leaving this place without the Dark Soul, Syth," Rias said as she sprouted Devil wings.

"If you want the Dark Soul, Rias." Syth said as he turned around, with his greatsword out. "Then come and get it."

Syth then started to charge at Rias but was soon sent flying by a large explosion. He was sent flying a few feet, creating a large crater once he landed. Syth then sat up, seeing Rias with dark red demonic energy surrounding her. Syth got up from the ground once more, grabbing his greatsword off from the ground.

"Is that all you got?" Syth asked before Rias fire another dark red orb of demonic energy at him.

Syth quickly raised his left hand and summoned a large blue magical shield to block the ball of energy. When the energy hit the shield, it shattered. The entire area was full of shattered pieces of the magical shield, forcing Rias, Kiba, and Akeno to cover their eyes. When they uncover their eyes, they found Syth and a large dark grey wolf, that was standing behind.

"Farron, attack the Devils." Syth said, making the giant wolf let out a growl.

The wolf stepped forward, towards the Devils, before a large dark grey sword raised from the earth. The wolf grabbed the sword with its teeth, staring at the Devils while picking up the sword.

Once the wolf had the sword in his teeth, he charged at the three Devils at great speeds. When he reached them, swung the sword around, in his mouth. This made the Devils jump back to avoid the deadly dark grey colored blade of the sword.

"Rias, what should we do?" Kiba asked as he was about to dodge another swing from the wolf and its blade.

"We really can't handle both Syth and his wolf," Rias said, before ducking a large ball of fire from Syth. "But I have one trick up my sleeve." Rias then summoned a large red demonic circle. Outta the circle, chains shot out and headed towards Syth.

Syth notice this and raised his sword once more, before starting to swing at the chains. Syth managed to destroy a few of the chains, but the rest manage to survive and pierce his scorched armor.

Everything seemed to stop, once the chains pierced Syth. Everyone turned their heads towards him, seeing multiple chains going through his body. The once Soul of Cinder fell to his knees, before opening up his left hand. In his hand was the Dark Soul.

"If I'm going to die," Syth said, out of breath. "Then I'm taking the Dark Soul and this world with me." Before anyone could react, Syth closed his hand around the small speck of fire, creating a large flash of light and making the ground shake uncontrollably.

The flash forced Rias and her pieces to cover their eyes, so they couldn't be blinded. After a second or two, Rias uncover eyes and found herself in a large, dark room.

Rias looked around the room and found nothing, except for a throne that holds someone she knew.

"Sirzechs," Rias said when she saw her brother.

"What have you done?" Sirzechs asked, making Rias confused.

"What do you mean, brother?" Rias asked. "I just went and tried to recover the Dark Soul, like you said." She then jumped, when her brother slammed his fist on his throne.

"You have any idea what you have done?!" Rias' brother asked before he stopped a minute to calm down. "I have seen what have happened, and I am not blaming you. But due to both you and the actions of your peerage, the cage has been broken. The doors to the Abyss. The Chaos. The land of Darkness has been open."

"What do you mean?" Instead of answering his sister, Sirzechs threw a large piece of metal.

Rias caught the large chunk of metal, finding it to be a black colored helmet. The helmet was caught large for any normal human, Angel, or Devil. It had two sharp metal horns placed on the top. It also had two small slits for the wearer's eyes, in the middle of the helmet. Rias already knew what it was and feared her next question.

"Where did you find this?" Rias asked, still holding the black knight helmet.

"We found him in a small forest, located somewhere in Europe," Sirzechs answered, making Rias panic a bit. "He managed to kill ten of my best guards. If one of these creatures are here, then much more are likely to come."

"What do you want me to do?" Rias asked, trying to not sound scared or worried.

"For the time being, nothing." This made Rias worried a bit more. "I will be looking more into this matter myself. I don't need other Devils and especially the Angels knowing about this. Now, go back to your peerage, Rias. I will call on you later."

A/N: Hey, guys. This is Shadow Commander. I hope you enjoyed this chapter, well prologue. I know I had some fun creating this concept for Dark Souls and High School DxD. And if you are wondering, I will be leaving some Bloodborne and Demon Souls references and easter eggs, since they are part of the Soul series.

If you want to seem more, please just follow, favorite, or do both. And for those people who have ideas, you can either PM me or leave it in the review section.

Thanks for reading and please leave a comment. Until we meet again, Shadow Commander signing out.

PS: Also doing pairings. So, leave your ideas in the review section or PM me them.