Chapter 1- The beginning

Welcome everyone, to another Highschool DXD story, so let's get this story on the the road, I do not own Highschool DXD, or anything Spider-Man related, I'm not even the guy who came up with the idea, for you see this is a two man job, I write while the person that came up with the idea is 'Lewamus Prime 2016', so if you want to thank anyone thank him, but he also does not own Spider-Man or Highschool DXD as I know of, but he does own the Oc's used.

*Unknown location*

"Heheh, alright the data has been absorbed and combined into this, a living organism that can merge with a host and is forced onto said host and can't leave the host otherwise this symbiote I should call will die, with this I shall become the most powerful Devil alive, and no one can match me, because with this symbiote I will have the power of every supernatural being, including 666!" A cracked like wicked evil sort of voice spoke with a evil laugh.

The place was a evil laboratory from the movies, but even more creepy, and in the middle of the room is a black like organism that is moving around and was stretching around, as it was trying to attack or escape, making the man laugh at the attempts the organism was doing.

"Don't even try, now to add something else, probably some spider DNA, yes, Oh! What if I make copy, wait just cool it Dr. Rimize, you don't have a lot of time, I'll just do the spider DNA and then get out of here with it, now just some blood and gas from spider DNA, and done! With this I will be able to rule the Underworld!" The man now known as Dr. Rimize told himself, before he heard a major beeping sound, making him grow pale, and run around putting many files in two suitcases, and as he tried to get the Symbiote out of it's container, a explosion happened allowing the Symbiote to escape, and go through multiple cracks that appeared from the explosions.

"Dr. Rimize a SSS stray Devil you are under arrest, and here by sent to death!" A voice yelled, making Rimize grit his teeth, trying to find the Symbiote, only to find nothing.

"Dame if you Maou, just a few more minutes and I would have became the most powerful being in existence! Grr...well whoever that Symbiote combines with, may they die a slow painful death, because even if it's gone, I still have a sample, it's not strong enough for me to use, or anyone, but I will get the power I totally deserve!" Rimize spoke, as he ran out of his lab, which appeared to be at Japan.

'After all this was all possible thanks to one Maou's work on making people to Devils.' Rimize thought with a wicked smirk, as he ran away where no one can find him, but as he ran the moon showed what he looked like, a man in his 30's with white long hair that is hold together by a rubber band, with cold green eyes, and is wearing black slacks, a grey dress shirt, and a white lab coat.

*Few hours later*

"I'm telling you, if people found out about how you really act you will never get a girlfriend, I mean have you saw those two guys?" A teen wearing a middle school uniform who had black messy yet spiky hair, with sky blue eyes and is a bit buff, and next to him is a boy with brown hair and eyes, wearing the same school uniform.

"Yea, yea Zack whatever, but I'm not a open Pervert, but your right about one thing I'm a prev, and I don't want girls knowing that I am one...even though it's a bit obvious." The boy with brown hair claimed, as the other boy named Zack shrug his shoulders.

"I don't really know Issei, I guess you are really luck~y!" Zack started before his voice became a bit shaky, confusing Issei.

"What? Are you ok?" Issei asked a bit worried, but Zack shook his head.

"No I'm fine, probably just took a wrong step when walking." Zack claimed more trying to convince himself than Issei, which only caused Issei to frown.

"Alright, but if you get hurt your Aunt, Uncle, and sister will have my head." Issei gulped in fear, but Zack just laughed.

"Yea right Aunt and Uncle definitely, but my little sister, she has a crush on you." Zack teased, making Issei blush and growl.

"Yea right, but I forgot to say it before, so thanks for helping me study for that science test, and for the exam for that one school." Issei told Zack, who nodded his head.

"No problem, here's my stop later." Zack told Issei as he went into his home, making Issei roll his eyes and walked to his home, which was next door.

"I have a bad feeling about the walk home...and I know it will involve you Zack, so I swear to good if you get yourself in trouble I'm going to get you out of it, then kick your ass for doing something stupid." Issei muttered and went inside, but he could never be even more right about his thoughts.

*2 Days later at night*

"Ugh, now that school is over in one week what will I do...? All well I'll deal with it tomorrow...now time for bed..." Zack muttered, as he was laying in his bed and closed his eyes and soon fell asleep, but a black substance was crawling towards him, and once it got to his bed it climbed up and sticked itself to Zack's foot and started to stretch all over him to the point Zack was cover in a suit, and as it was about to cover his face, Zack woke up in fright, before blacking out, then waking up only to see something he thought he would never see.

"Why the hell am I upsidedown on a building...and what is this?" Zack whispered, as he jump on to the building and looked at himself, he was wearing a purple-black like suit with grey lining on the chest and on his arms which reached mid way from his elbows, and on his face, which there was a mask on top of his face, and boot like ones on his feet, and to top it off a giant white spider on his chest and back (a mix of the black suit of Spider-Man 3 and shattered dimensions).

"Consider this as a gift." A voice spoke.

"Woha!" Zack yelled while doing a backflip with amazing reflexes, which only lead to him falling, only to be saved by a black-purple tentical coming out of his back and making him land to a nearby building.

"Hey! Be careful! You could have almost died, and kill both of us!" The voice spoke again, making Zack freak out and look around scared.

"Where are you! Come out and fight!" Zack called getting his fist ready to fight.

"Can't really fight if I'm what you are wearing...anyway I'm a Symbiote, a living organism that lives by bonding with a host, and Zack you are my host." The Symbiote claimed, making Zack freeze.

"...Ok I'm going to need a explanation, cause I'm more confused than a substitute teacher doing work..." Zack claimed, only to get a annoyed sigh at his joke

To Be Continued...

There we go the first chapter, now if you you have questions about the harems well here they are-

Zack- Rias, Akeno, Koneko, Raynare, Tiamat, Mittlele, Xenovia, Kuroka, Rin (Oc)

Issei- Asia, Kalawarner, Ophis, Le Fay, Irina, Rossweisse, Voila (Oc)

This has been decided by a agreement, no one will be added, as far as I know, but yea I hope to see you all next time so later.

Spidy-time