I do not own high school DxD
Issei will have his harem and then some list will be at the bottom
Will have some characters from other anime but only if I find it appreciate
Issei will have some of the personality of the sins like Meliodas being carefree and a little pervert ban arrogance
''normal talking''
''spirit/animal talking'' sentient sacred gears
''techniques''
After diching Rias Issei went to the park and saw Asia then he walked up behind her and said ''hey Asia how are you''
Asia jumped a bit turned around saw who it was said ''Issei you scared me, and I am good''
Issei looked around saw that there was no one here turned to Asia and said so what brings you here''
''Ohh i am here as I couldn't deal with what the fallen angels was doing so I run away'' Asia replied
Issei was surprize by this then said ''okay then lets go somewhere else and grab a bite to eat'' then he took her to a fast food joint then before ether of them knew it had turned into a date and at the end they was by a fountain and Asia was telling Issei her past when then Issei said ''well that is sad and I might sound like an ass for saying this bat I am glad that you went though what you did after all it brought you here and we became friend and I don't give a shit what anyone says''
Asia who had tears in her eyes said ''thank you Issei ''
Then there was a females voice behind Issei who said ''isn't that sweet''
Issei turned around and saw a fallen angel and before he could say anything Asia said in a scared tone ''lady Raynare''
Issei turned to looked at Asia and said ''wait you know this perverted fallen''
Raynare who heard him said ''who the fuck do you think you are calling me a pervert, and don't you think about running Asia''
Issei sensing a fight coming took a step to protect Asia and the latter said ''go away I don't want to be apart of any evil that you and the others are doing''
Issei looked at Raynare and said ''you heard her now piss off'' but the fallen summoned a spear of light and Issei said ''Ohh a spear of light I'm shaking'' then before anything else happened Raynare throw the spear at Issei and it went thought him and he coughed up some blood and when the spear faded the wound healed and he noticed a pale green glow
The fallen angel then said ''now Asia be a good little girl and come with me as your healing powers will be more useful than anything or I will kill your friend'' then she summoned another light spear
Issei got up then said ''like hell she is going with you'' then he felt a sense of dread he then looked up and saw the fallen about to throw the spear he then pushed Asia out of the way when the spear hit the ground it exploded coursing Issei to flies into the water
Asia shouted ''Issei no''
Raynare then floats down next to Asia and said ''I speared his life on purpose if I wanted to, he would be dead now''
Asia looked defeated and said ''I'll go with you'' and before Issei could get to the Asia said ''goodbye Issei I'll miss you'' then they was gone
Issei went to inform Rias about what happened by the fountain and what he plans to do but before he could finish Akeno came and whispered something in Rias' ear the she said ''something has come up Akeno and I have to step out for a moment continue where we left of when we get back okay Issei''
The moment Rias and Akeno left Issei said ''well I'm not waiting around for them to come back'' then walks to the door
Kiba then said ''mind if and Koneko come with you''
Issei stopped then turned around and said ''sure I don't mind but just so you know I plan on going throw the main door''
Rias and Akeno appeared behind the church and they was instantly was greeted by a little blond fallen who seemed a bit arrogant then Rias said '' since you are standing guard your people must be worried of an attack''
The blond girl said ''worried as if we just don't want you devils to interfere with a very important ritual that is going to happen tonight''
Akeno then said ''well there just so happens that one of our friends and two of the younger members of our team are going there right now and they are not exactly being secretive about it ether''
Which caused the girl to go on a rant then said ''well if you want to save them you will have to go through me first''
Rias said ''well sorry to bust your bubble but we are not exactly going to do any sort off rescue op we are here to see what Issei is capable of''
Meanwhile on the front side Issei Kiba and Koneko was talking and Koneko walks up to the door and kicks it while saying ''they know we are here''
Once inside there was no one anywhere then Issei said ''now I am used to this sort of thing but damn it shit still creeps me out''
Then there was a clapping then Freed should up and said ''well I was hoping we would meet again so I am glad you could make it I bet you missed me''
Issei then said ''yeah right you psychotic bastard''
Frees then said ''here's the thing I pride myself that I never battle a devil more then once and yet here you are just rubbing it in and I will never abide by and that is being mocked by bandit devils in the house of god so what do you say lets finish this'' then he pulls out his gun and sword''
Issei took a step forward and said ''where is she''
Freed said ''you mean that dirty devil loving whore she is just downstairs that is just below the alter that we are currently standing on but in order to do that you will have to get through me''
Koneko then picked up a bench then throw it at the rouge cut the bench then said '' your pretty strong for runt''
Koneko then said ''suck it then throw some more benches'' then Kiba kept the priest occupied while Issei sneaked over to the alter then he picked it up breaking what ever it was holding it there the he throw it at the priest then went down and Kiba and Koneko followed
When they got to the room that they was holding Asia they saw she was tied to a cross that that just started to glow green and Asia screaming then a small glow formed Infront of her chest and Asia's screams died down then she went limp and Raynare said ''ahh at last twilight healing is now in my hand''
Koneko and Kiba both drive forward spiting the group of priests so Issei could get to Asia and with tremendous speed he got Asia and was walking away while carrying the small girl in a bridal style and Raynare said ''you can take her I got what I needed''
Issei didn't say a word and he had he bangs covering his eyes and not liking that this boy was ignoring her she throw a spear at him but he jumped down the stairs and landed without a sound then with the same speed he run out to the to the stairs once in the main hall he placed Asia on the bench then he waited for anyone to show up and it didn't take long as Raynare who healed a cut and said ''you male teammate did this''
Issei said ''I will ask once return the secured gear to Asia for face something far more dangers then a devil''
''empty threats'' Raynare said
Then all of a sudden there was a dark pressure Raynare looked at Issei and saw his eye was black and not gold and he had a mark above his right eye then he said you faced devils nor the try a demon'' all the fallen angel did was summoned a spear and throw it at Issei but he caught it and said ''I've had enough of this then he shattered the spear then he walked over to Raynare grabbed her then took the rings then he throw her out the door
He was on back to Asia when he saw Rias who said ''so that's what you are a demon how about we make a deal you tell me what are capable off and I bring Asia back''
Issei took about a minute to think then said ''deal but you bring her back and it will tell you tomorrow''
''Okay'' Rias sad then Issei handed her the twilight healing the Rias done the resurrection ritual after a joyous moment everyone was leaving but once they got outside Issei just froze when Rias noticed this, she tried to snap him out of it
Meanwhile at Ryozanpaku
Hayato was in his room when he heard something break, he looked over and saw it was a glass ape and then remembered what it signalled
Flashback
It had been a month since Issei moved into Ryozanpaku and time Issei was going to bed when Merlin asked him something ''hey Issei do you mind if I take control as I need to talk to your grandfather about something and I need it to be privet so no overhearing''
Issei thought back ''sure but will you tell me what you talked to jiji someday''
As Merlin took over, she said ''sure I will'' then he/she walked to the office
Once Merlin was at the office and knocked Hayato said ''come in'' once Merlin walked in Hayato said ''ahh Issei its your bedtime so you should be heading to bed''
When Merlin replied both hers and Issei's voices was overlapping ''sorry Hayato but I am not Issei I am Merlin the boar sin gluttony and I need to talk to you something about the boys DNA and there was something there that wasn't human so I ask you do you know what it is''
Hayato took a deep breath and said ''yes I do it is the legacy of a humanoid alien race called saiyans'' then he told her all about the Saiyan race then finished of with ''so as you can see the bloodline is not potent enough to course any real trouble''
Merlin then said ''well you might want to worry with us seven deadly sins inside Issei and giving him power it is also going to make the saiyan DNA stronger but it won't be strong enough to turn Issei into the ape form until he is fifteen then the bloodline will take effect and I know the master at your dojo might strong enough to contain him when that happens''
Hayato looked shocked then said ''as you know when he turns fifteen, he is moving back to his mother so how can we know when that happens''
Merlin then took a few minutes to think of a solution then she said ''I have an idea'' then with a wave of the hand a glass figurine that was the shape of an ape then said 'that figurine is connected to the bloodline when it breaks that means Issei is under the full moons spell''
Hayato took the figurine then said ''thank you Merlin and please don't tell Issei this until the transformation''
Merlin then said ''well you didn't have to ask me that as I was already going to do the exact thing'' then she walks out of the room and backs to Issei's room
Flashback end
Hayato then summoned al the masters and when all the masters showed up Hayato said in a very serious tone ''thanks for coming but we have a problem''
Everybody was surprized the serious tone and Akisame said ''what is the problem''
All Hayato said ''it is Issei'' and that got everyone's attention then Hayato told them about the talk he had with Merlin and how Issei is the trouble
Once Hayato was done talking Shigure then said ''so when do we leave''
''Now'' was all Hayato said then all six masters run out and run at full speed to Kuoh
Back at the church
Rias and her team was now beginning to worry when they saw a monkey tail grow out of Issei's tailbone then his chest began to expand like Issei's heart was growing then after every ten seconds his muscles began to expand ripping his already torn cloths then he began to grow taller and hear after the transformation was done Issei had turned in to a giant ape Rias slowly flow over to his face and said ''Issei are you alright'' but she didn't get a response in stead the ape swung a hand and knocked her to the ground which left an impacted to where she landed
Akeno couldn't believe that Issei did what he did shouted ''hey Issei stop this at once or you will be sorry'' but she did not get the response she wanted due to the ape through a tree at her once out of harms she summoned a few bolts of lighting but when the bolt hit Issei it did nothing but annoyed him Kiba summoned a sword and went to slash his leg but the sword shattered and this went on for half an hour
when Rias was smacked to the ground for the umpteenth time she landed near the ape's foot and the ape lifted his foot up with the intent to squash Rias when the ape brought his foot down Rias closed her eyes waiting for the pain that was to come but it never came so she open one eye and saw that someone with tanned skin who then shouted to someone ''hey Akisame Apachai saved crimson girl''
''good now Apachai we need to focus at the task at hand'' Sakaki said
Once the Apachai put Rias down she saw four grown men and a grown woman standing there and all the men had her beaten peerage then Rias asked ''who are you people''
The oldest man looked at Rias and said ''we are the masters at the Ryozanpaku dojo''
Rias was shocked as she is meeting legends and worried for Issei then said ''please don't kill the ape it's not his fault''
Then Akisame said as he placed Koneko down ''we are not here to kill Issei miss Gremory we are here to stall for the next hour as the sun will soon be rising and we would be out of our mind if we was going to kill the grandson of the grandmaster''
This news shocked most of the teenagers then Asia asked Rias ''excuse me Rias but why are you and your team shocked by this news''
Kiba limped over and said ''the Ryozanpaku dojo has masters that are so strong that most if not all factions are afraid of them if they even take jobs from the factions but they have a rule for the supernatural world that if they take a job they do not kill the innocent and you would be wise not to lie to them''
Shigure looked over and said ''you are right about that now you kids stay here and let us take care of this''
Then the masters went to attack the ape they seemed to be fine, so Asia started to heal everyone there was about ten minutes left till the sunrises and most of the masters was having trouble standing seeing no other choice Hayato said ''fall back everyone I will hold Issei of for the last few minutes''
Sakaki asked ''are you sure you can handle this after all this is not a normal fight''
Hayato looked at Sakaki and said ''I will be fine after all I have yet to bring out my trump card''
Sakaki then nodded then jumped over to where Rias and her peerage was, and Rias looked at Sakaki and said ''what is the old man doing he is going to get himself killed''
Sakaki who was still watching Hayato said ''relax there is a reason why he is known as the invincible superman''
Hayato was walking towards ape Issei and brought his left arm then there was a red glow then then a red gauntlet appeared with a green jewel then a voice came out the gauntlet that said ''its been a long time since you used me partner so you opponent must be tough''
Hayato said ''it has been a long time Ddraig and as for who our opponent it is our grandson because of some circumstance he is now a giant ape''
Ddraig said in a surprized tone ''I Take it has something to do with the seven deadly sins that is lives inside your grandson does it''
Hayato chuckled then said ''they are half of the problem the other half of the problem is me now then balance breaker'' then Hayato was in a dragon scale armor
Ddraig then ''boost boost boost boost boost boost boost boost boost boost boost boost boost boost'' then Hayato kept the ape busy then the sun then the ape started to shrink then then once the transformation was done Issei was sleeping in his birthday suit and the five females blushed when they saw his penis
Hayato took of his shirt placed it on him then picked Issei up then looked at the others and said ''Issei will be put till tomorrow due to the first-time transformation so I am going to take him home then I will meet you are you clubhouse and I will tell you everything there is to him so you can make '' then took Issei home
Once Hayato was at his daughter's house when he knocked Miki answered saw that it was her father then saw that he was carrying Issei she panicked but Hayato calmed her by saying ''calm down Miki he just had that transformation that I told you about ten years ago about our bloodline'' once Miki calm down her father said ''now mind showing me Issei's room as I need to let his devil friends everything that is if the others haven't done it wall ready'' then Miki showed her father where Issei's room was when Hayato was leaving he turned to his daughter and said ''I will be by later to check on him'' then he left for the school
Once Hayato was at the clubhouse he was meet with Akeno who showed him the way when he was in the main room Rias the said ''greeting grandmaster and welcome you don't have to tell us about Issei as Akisame had told us about the powers he has that comes from a different universe
In harem Grayfia, Ophis, Shigure
Going to join Rias, Akeno, Keneko, Kuroka, Xenovia, Asia, Irina, Rossweisse, Riser's peerage