I do not own Fairy Tail or Highschool DxD

Issei's alarm went off making him slowly wake up. He grumbled a bit while trying to turn off his alarm clock.

He slammed his alarm clock again, and he slowly sat up stretching his arms. He lowered his left hand down, but when he did that he felt something soft in his hand.

A soft moan was heard.

"What the hell?" He said slowly as he looked at what was underneath the covers.

Issei's eyes went wide at what he saw. "These are t-tits!" He yelled in shock and excitement. He tried to see who's drum set these belong to.

As he looked up he saw the same red hair that he saw. "Your...Rias Gremory!"

Rias woke up, and she sat up. She rubbed her eyes, and she looked over to Issei. "It seems that you are no longer hurt anymore, that's good."

Issei was confused, but he didn't care all he only stared at her tits.

Rias got off the bed and she got dressed. "Wait? What's going on here? I am so confused."

Rias smiled and she turned towards him. "I will explain everything to you at the school." She said as she got fully dressed.

She was about to leave but Issei stopped her. "Wait! Did we have..."

Rias didn't turn around. "No, no we didn't, so don't worry about it." She opened the door and left Issei alone in his room thinking about what just happened.

Issei looked at his hands. "What the fuck just HAPPENED!"

After he was done yelling to himself for some time he got dressed and was ready to leave for school.

He was walking to the academy with his head down thinking of what just transpired earlier. As he was thinking an image of a guy with a fedora popped in his head. He clenched his head as it hurt his brain trying to think.

"W-Who was that?" He asked himself as he entered the school grounds.

Right as he entered his two friends immediately popped out of nowhere. "Yo Issei, you down to look at some fine ass tits?" Matsuda asked as he put his arm over him.

"You know what, let's do it." He said as he wanted to get that image out of his head.

"Now we're talking," Motohama said.

After some time they were all by a tree eating lunch. "Maaaan, those were some nice round tits," Matsuda said with a huge grin.

"What do you think Issei?" Motohama asked.

"I've seen better." He said nonchalantly.

Matsuda grabbed Issei's shirt and he brought him close to his face. "WHAT! Oh hell no you didn't say that."

Motohama pulled Matsuda away. "Calm down will you." Matsuda calmed down and he tried to stay calm.

Issei fixed his shirt and he took a sip of his juice.

"Besides, I think Rias's tits are better," Motohama said as he fixed his glasses. Issei immediately spat out every last bit of juice in his mouth all over Matsuda.

Matsuda looked at Issei with a confused looked but it turned to anger quickly. "Why you piece of shi-" A voice cuts him off.

"Excuse me, but can I borrow Issei for a little bit?" Kiba asked.

Motohama gave him a dirty look. "And why do you need him?"

Kiba only smiled. "My club President want's to speak with him." Matsuda and Motohama were shocked to hear that.

Matsuda was about to punch him but Issei stopped him. "I'm gonna go see why they need me, then I will return." He left and followed Kiba.

The both of them made it to the club room and they both walked in together. Issei looked around and saw that it was clean to the core.

"Are you satisfied at how clean it is?" Akeno said with a smile. Issei looked ahead of him and was surprised to see Akeno Himejima standing right in front of him.

"Your A-Akeno." He said slightly surprised.

"Don't worry, the club President shall be out shortly. So please take a seat." She said as she kept the usual smile.

Issei nodded and he sat down. Rias walked out of the shower room fully dressed. "Ahh, Issei, welcome to the Occult Research Club. I hope it wasn't too much trouble coming here."

Issei waved his hands in front of him. "No no, there was no trouble."

Rias smiled at that. "Very well, let's get down to business, shall we?" Issei only stayed quiet.

"Now the reason why you were in bed with me naked was that I was healing a wound that you had."

Issei looked confused. "And we have to be naked?"

"Indeed, I was using magic to heal you so it requires skin on skin contact."

Issei looked even more confused. "Magic? Magic doesn't even exist in this world."

"Issei, do you believe in the supernatural like Angel's, Devil's and Fallen Angel's?" Rias asked.

He scratched the side of his cheek. "Not really, I wasn't a big believer in such things. Why do you ask?"

Rias looked at her peerage then back at him. She released her bat-like wings as well as everyone else including Issei. He looked behind him and was trying to see if this was real.

"What the hell? What is this?"

Rias retracted her wings with everyone else. "Were Devil's Issei, and you are one as well."

Issei kept on looking at her. "You are my servant just as everyone here in this room. But I treat my peerage as a family, so don't worry."

"But how did this come to be?" He asked.

"You were killed by a Fallen Angel by the name of Yuuma Amano or also known as Raynare. So I revived you into my servant."

Issei's eyes went wide. "W-Where is s-she then?"

Rias looked down to the floor. "Did you k-kill her?"

"No... Someone else did, and I am trying to figure out who this person is."

Issei looked to the floor as well. "But enough of that. The reason why I have revived you was because you have a Sacred Gear inside if you."

"Sacred what?"

"A powerful weapon created by God that only humans can use."

"Then how do I summon it then?"

"Close your eyes and raise your left hand, focus on that part of your body that is the strongest."

Issei did as he was told and focused. He squeezed his eyes shut and a bright green light appeared revealing a Sacred Gear in his hand.

"Very nice Issei, now you just have to practice on how to turn it off and on."

Issei deactivated is Gear and it vanished.

"I will explain this to you. Angel's and Fallen Angel's are our enemies. We had a three-way war between us all, but it ended and it left all of us at a weak state.

Issei looked at his hand and a memory of Yuuma appeared.

"But for now, I have reports of a stray Devil at an abandoned warehouse. We will show you how to deal with one as a team. We leave a nightfall."

Everyone nodded.

Scene Break

Night has come and Acnologia was sitting on the ground in a warehouse. He lowered his head so he can concentrate on the information he got from the female he killed.

"This world is different, These people are different and to make even worse. The seven Dragon Slayers and Zeref are nowhere to be found."

Acnologia punched the wall behind him making a huge hole. He stood up and was about to leave but a voice was heard.

"What is this smell? It smells so delicious and wonderful." A woman stepped out of the shadows.

Acnologia turned around and he only stared at her with his narrowed eyes. "Ohhh, what a sexy looking fellow we have here."

Acnologia only stayed quiet at this. "How about you come here and I will show you a good time." the Stray said.

He started to walk towards her slowly. After he got close he looked into her eyes with a menacing glare. Acnologia grabbed her face with an iron grip lifting her up in the air.

The door behind him opened and five people walked in. Rias was in the front and her peerage was behind her. But right when they walked in they couldn't believe what they were seeing.

"It's him," Rias whispered.

Acnologia squeezed her face and it got crushed spilling her blood all over his hand and arm.

He threw her body to the side and he turned around to look at all of them.

Everyone saw what he just did to a stray Devil with just his bare hand. Rias spoke up. "Who are you? And why are you here?"

Acnologia didn't respond to her questions. "If you don't answer we will have to kill you." Akeno cut in this time.

Acnologia didn't care about anyone's threats. He slowly started to walk to leave the warehouse but Koneko moved fast and punched him in the face.

He didn't move an inch from where he was. Koneko and everyone else couldn't believe what just happened.

"He took Koneko's punch like it was nothing," Kiba said.

Acnologia smiled at this. He smelled her and he grabbed her hand. "You think a little kitty cat can stand up to me?"

Koneko was surprised at what he said. He clenched her hand and he threw her across the warehouse with extreme force.

Kiba summoned his sword and he charged right at him. He swung his sword down and Acnologia only raised his arm to block the attack.

Kiba was dumbstruck at what he did.

Acnologia grabbed his sword and he kicked Kiba in the gut making him fly back towards Rias.

"Interesting, you people think you can stop me? Don't make me laugh." He tightened his grip on the sword shattering it to many pieces.

Rias was at a loss for words. "Akeno!"

Akeno smiled and she stepped forward a little. She started to make lightning in her hand. "Enjoy this mister." She shot her lightning right at him to try to make him immobile.

Acnologia only stood there like nothing was happening. Akeno was shocked to see that her lightning isn't doing anything to him. "Who is this guy?" She asked.

Acnologia started to eat her lightning till there was nothing left. Akeno started to walk back a little.

"Now, I will show you my power," Acnologia said. Koneko stood up and charged at him kicking him right in the head with full power, but nothing happened.

Acnologia's aura started to cover his body making everyone shake in fear. Koneko jumped back from him.

He walked towards Rias. He was standing right in front of her. Rias only stared into his eyes, but a little tint of red appeared on her cheeks.

Acnologia was about to kill her but a smell stopped him completely. He looked past her and saw Issei.

"You, your smell is of that of a dragon." He passed Rias and he stood right in front of Issei. Issei was scared shitless after what he just saw.

Acnologia covered his fist in a blue ball of energy and he was about to punch him in the chest but Rias stepped right in front of him.

He stopped a few centimeters away from her face. "Get out of my way. You are not who I am after." Everyone regrouped with Rias and Issei.

"Please, just leave him alone. We will not bother you at all, so please just leave him alone."

Acnologia lowered his arm and the energy around his fist vanished. "I must kill him. He is a dragon and that is why he must perish."

"How do you even know if he is one?" Koneko asked.

"I can smell it in him."

"Who even are you? Or should I say, what even are you?" Akeno asked.

Acnologia walked past them and he turned around halfway. "If you truly want to know who I am, then sink this in your heads. I am known as the Black Dragon of the Apocalypse or as the True Dragon King.

Everyone was dumbstruck at what he said. "If you're a dragon, then why are you here then?" Rias asked.

Acnologia turned around and left saying nothing more.

Everyone stood there quiet not saying a single word to anyone. Issei looked over at Akeno and saw that she was blushing like hardcore. So he looked over at Rias.

She had a worried expression. Akeno turned towards Rias. "What shall we do Rias?" She asked as she licked her fingers.

Rias looked at her. "I will talk to my brother of what has transpired here tonight. Let us go." She started to leave with everyone but Issei fell behind a little.

Issei looked up at the sky. 'I am known as the Black Dragon of the Apocalypse or as the True Dragon King." Those words will haunt Issei forever.

Scene Break

Acnologia was standing on top of a hill. The wind blew gently making his cloak and hair move a little. He stared up at the bright moon.

It was a peaceful night after what happened at the warehouse earlier.

He stopped looking at the moon and he looked to his right and he saw a broken church.

He looked away from the church, and he started to walk down a dirt path. As he was going the down the dirt path he could smell blood.

He got closer to the smell, and he could see a man with a gun in his hands while a sword was plunged through a body through it's back.

Acnologia ignored the fool and he kept on walking but the man stopped him.

"Ah ah ah, where do you think you're going, mister?" Acnologia just kept on ignoring him.

The man smiled. "So, your the silent type and a fool. If you ask me, those go well for you." But Acnologia kept on walking.

The man started to get angry at him. "Why you piece of shit. You think you can ignore me you little bitch!" He pointed his gun at him.

Acnologia stopped but he didn't turn around. "Now...who are you?" Freed asked. Acnologia turned around and looked at him dead in the eye with a menacing glare.

The man could smell death and chaos off of him. "What do you want...human?"

"You think you're tough huh? Well, let's just see how tough you are when a bullet goes right through your head." He shot his gun but the light bullet didn't do anything to him.

"What the fuck?!" He shot every last bullet he had but nothing happened.

"I really hate humans, but I don't really mess with them at all unless they try doing what you just did," Acnologia said with a cold voice.

"But...I guess it's time for you to go to the afterlife." Acnologia appeared in front of him freaking him out. He covered his fist in the same blue energy and was about to punch him in the stomach but he jumped back.

"Freed, it's time to go. I think the Devil's are coming soon." Dohnaseek said.

"Yea, get me the hell out of here," Freed said with a little worry.

"Who is that?"

"I don't fucking know and don't worry about it. Let's go!" Dohnaseek grabbed Freed and flew off with him towards there hideout.

Acnologia's magic power around his fist vanished, he looked up at them for a couple of seconds before turning around and leaving. He turned around and started to walk the dirt path.

He got off the dirt path, and he found a little building. He walked towards it and opened it up. Acnologia walked in and shut the door behind him, and he looked around.

There wasn't anything wrong with the place so he walked forward and he sat down on the floor, he leaned against the wall. His head lowered to the ground and he slowly closed his eyes.

"I will kill that boy if it's the last thing I do. I will erase every dragon there is in this world." Acnologia declared before slowly drifting off to sleep.