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''

It has been ten years since Issei and Ophis started to train at the Ryozanpaku dojo now normally he would be training but he is packing along with Ophis as they are moving back into his mother as per the arrangement he still has brown hair but since the day he saved Ophis his eyes have been changing colours by the day from green, purple, red, brownish-orange, amber, gold, and blue no one know just why that is not even Akisame and he is known as the medic demon

Out at the main gate Issei was putting the cases in to a pulling cart with the masters of the Ryozanpaku dojo once everything was packed in a cart Hayato then went up to Issei and said ''now be good to your mother you hear and also make sure to keep up with your''

''are you kidding me grandpa I still want to try and beat you and everyone else without them holding anything back and win far and square'' Issei says then in a joking voice ''if anything I will increase the intensity'' which got a laugh from most of the masters then walks up to the other masters to say his good byes he first walks up to the first one which was Akisame and says ''thanks the schooling and the lessons on jujitsu and in medics''

''it was a pleasure teaching you'' came Akisame reply then they shook hands

Then Issei walks up to the Apachai then says ''thanks for the lesson in Muay Thai Apachai''

Before he could get away Apachai brought him in to a hug crying and mumbling ''Apachai is going miss Issei what will Apachai do now''

Issei says to Apachai ''can you please put me down don't worry you can come and visit as long as you let me know first and I will be coming back as I will need to test my strength out and to see you guys '' Then walks up to the Kensei then says ''thanks for the lesson in Kenpo Kensei''

Kensei then replies ''Not a problem is you ever get a girlfriend let me know first okay''

''Like hell I will you will probably be the reason she dumps me'' Issei the shouts swinging courechouse trying to hit him but he got a way a perfect example why they call him Kensei the slick after he calms down he walks over to Shigure and says ''you were the biggest help there was as you helped he master the weapons I got from the seven deadly sins''

Shigure then said ''it was no problem '' then did something that shocked everyone and irritated Ophis and that was she kissed him on the lips once she realised what she was doing she cut the kiss then jumped over the wall while blushing

Issei not knowing what to do said ''well that just happened can someone please let Shigure know that I will be back next weekend so we can talk'' a get a nod from everyone then walk up to Shio ''thanks all those karate lessons Shio''

''No problem kid'' then shook hands

Then Issei started to walk to the cart he grabbed the rope and said ''see you next weekend'' then turned to Ophis and asked ''you ready to go'' which nods then Issei pulls the cart

A couple hours later the duo was back at Issei's home he knocked, and Miki answered the door to see who it was when she saw it was Issei she flung the door open and pulled him in to a hug then went to Ophis and gave her a hug then went to help the teens empty the cart

Once the cart was empty the trio sat in in the living room and had small chat like how they have been, what's now which involved a bit of teasing Issei when Ophis told Miki what Shigure did and both of them will starting school on Monday the weekend passed with nothing happening apart fem Issei and Ophis sorting out there rooms and on Monday Issei and Ophis got dressed in their school uniform and went to school

When they got to school, they asked a girl with crimson hair where the office was when the girl gave them the directions to the office, they said thanks then went of just when they were out of site

The crimson haired girl ''hey Rias'' Rias looked and saw her friend

''hey Akeno, do you know who those two people was'' Rias asked

''sorry but I don't know but there was a rumour going around last week about we are getting two transfer students, so I guess that was them'' Akeno said then in a teasing voice says ''why did the crimson princess find the boy cute''

''No just curious as both of them don't seem normal so I will try and get Sona to find out what ''came Rias' reply

Back with Issei and Ophis who was heading to the office when Issei says ''so that is Sirzechs' little sister she seems nice what do you think Ophis''

''I think you are a pervert'' Ophis replied

''Well that may be true, but you know the two to blame'' Issei joked

''Yes, but one of them I can't kill without killing you and the other one is a little weasel'' Ophis says in an irritated tone as all the time she's tried and kill Kensei ma for peeking on her

''That may be true but at least there was never a dull moment at Ryozanpaku so imagen what would happen is we took Rias and her peerage to see grandpa'' Issei said before laughing and gaining a chuckle from Ophis when they made it to the office they got there schedules and found they had the same classes on the way out Issei accidently walked into someone when he looked up he saw a girl with white hair then says ''I am so sorry what is your name''

''My name is Koneko Toujou and it is alright as part of it is my fault for carrying two much and who are the both of you'' said Keneko

''my name is Issei Hyoudou and this here is Ophis Ouroboros'' he says while pointing at Ophis ''here let me help you'' and both Issei and Ophis starts helps the girl pick up the papers then take the to the old school building once inside they placed the paperwork on the desk then headed to homeroom

When the bell for homeroom went Issei and Ophis waited out side till being called in they heard the teacher say ''now class before we begin we have two new transfer students joining us from today so please make them feel welcome you can come in now'' the teacher then waits until both had stopped and faced the class before continuing '' now class these two here are Issei and Ophis'' the teacher then looks at the duo and says ''why don't you two introduce yourself''

Issei went first and said ''hey my name is Issei Hyoudou and for the last ten years I had been home schooled because of reasons I will not tell''

Once Issei was done Ophis went next by saying ''greetings I am Ophis Ouroboros I look forward to this class''

The day till lunch was mostly uneventful due to Matsuda and Motohama or more commonly known as the perverted duo tried and get date out of her but got turn down when the door opened only to revile Koneko she saw Issei and Ophis then walked up to them and asked ''do you mind joining me for lunch'' which surprized everyone

''sure, I don't mind what about you Ophis'' Issei says

''I don't mind either'' Ophis replied then said ''as it is a nice day let's eat outside'' who both agreed

Then Keneko then led them to her favourite spot which was just out side the old school building

Meanwhile inside the building we find Rias playing chess Sona when Rias asked so Sona what have you hind out about the two new transfers''

''well the girl was quite easy she is the ouroboros dragon Ophis, but the boy was quite hard all I could find on him was his name and where he live so I send word home and lust received word that because he is such an unknown he could be a problem one day so they want us to take him out as soon as possible

''shame as he is quite cute and that it seems Koneko has taken a liking to them so might as well get him here after school'' Rias said she then went down to the trio once she was there she asked ''hey Issei right'' gaining a nod ''do you mind coming over after I want to ask you something''

''Sure, I don't mind'' Issei replied ''but what about Ophis''

''Bring her along as well'' Rias replied then looked at Koneko then said ''we have a meeting now''

''okay see you two later'' Koneko then walks in to the building

Once Rias saw all of her peerage as come, she say ''we have a new target''

''Really who is it'' asked a blond

''well that is the sad part kiba as it is Issei and Ophis'' replied Rias

''what why is Issei be and Ophis being attacked '' demanded Koneko which got everyone surprized

''it is because Ophis is the Ouroboros dragon and the rumour is that she started the terrorist group known as the khaos Brigade and as for Issei the underworld doesn't know anything about him but they can tell that he is strong so he doesn't become a threat they want us to take him out I am sorry but we have to do this Koneko'' Rias said

The rest of the school day was also uneventful so Issei and Ophis was heading towards the old school building when al of a sudden lighting strikes, but it just miss them then heard ''oh darn and I was so close to'' they looked and saw Akeno

''so is this some kind of initiation test to get in to you club or do you want kill us because I am hoping it is the former and not the latter'' Issei says

Then Ophis smacks him and says ''you moron you cannot die''

But before he could say anything, he was punched he looked and saw it was Koneko and she had a look that said I don't want to do this and quickly dodged another lighting struck from Akeno and was about to get hit square on by a big fire ball that was crimson and black and he quickly grabbed a large twig that was then said ''full counter'' and swing the twig which caused the ball to do a one eighty and doubled in size starting to head back to Rias but before it Issei got to her and picked her up bridle style and dropped her a few feet away from the explosion then went but dodge a punch by Koneko grabbed her waist then throw her on to Rias before he could do anything else his heart was run thought with a sword and him being some kind of joker played dead he could see Ophis was not fazed by him getting stabbed and Koneko crying and being comforted by Rias

Once the sword was removed he played dead a little longer it was when Akeno and Kiba was moving towards Ophis when he sat up and asked ''so any reason why you are trying to kill me because I do believe that we met today so I am drawing up a blank as to why unless you are some of the family members of some of the devils that I had slain or nobles that had lost their noble status''

''how do you know what we are and how are you still alive'' Akeno asked whole shocked that Issei was still alive after

''simple helped my masters do a few jobs for the all the faction and as for me being alive that is really simple'' replied Issei

''And what is that '' kiba asked

''a secret'' Issei replied before continuing ''can we go home now my mum might start to worry about be'' before anyone could objected he took off his shirt and walked to pick up his bag then walkover to Koneko and said ''I don't hold this against you'' then patted her on her head then turned to Ophis and asked ''you ready'' which got a nod then started to walkout of the school when he stopped and turned and held something and said ''because you tried to kill me I will be keeping these as compensation'' and what he was holding up was three pairs of underwear one was a red laced pair the second one was black thongs and the last one was plain white that had little cats faces and paws on it which got a blush from Rias Akeno and Koneko then headed home

Meanwhile back with Rias and her group everybody was in shock that Issei wasn't even fazed that they had tried and kill him then not too far from them a crimson magic circle and a male came though it then the male said ''guess I'm too late'' which got the attention of everyone

''hi brother what do you mean you're too late'' Rias asked

''well I came to tell you that that kill order on one Issei Hyoudou was not put though the proper channels'' replied Rias brother

Koneko stepped forward then asked ''wait Sirzechs you mean to tell me uhh I mean us that someone want to get rid of Issei''

''to put it simply yes'' Sirzechs replied before continuing ''you see Issei is not your ordinary boy he has been training for the past ten years by some very capable humans who we asked to do some hunter work for us and as so they have immunity form the factions to some extent but they have some condition one of which they do not take a life if an innocent or if there actions are just and noble and so they were bond to make some enemies now I am also here to give him his first solo mission that did not require him to tag along with his masters'' then he summoned a magic circle and disappeared

Rias looked at her peerage and '' well I don't know about you but I am going to go to Issei's house and apologies and also see if I can get my panties back'' which gain a nod from Koneko and Akeno

Kiba said ''Okay think I will apologies tomorrow as I did stab him in the heart so I will see you later'' then went home while the girls went to the Hyoudou residents

When they see Sirzechs leaving he waved then summoned another circle to go home then the girls knocked on the door they where met with a Issei's mother when she saw who it was she said ''hello and how may I help you''

Rias replied ''we are here to see Issei and Ophis there was a misunderstanding at school, and we came to apologies for it''

''Ohh so you are the ones that tried to kill my son and his little one of his girlfriends and my name is Miki'' asked Miki

With a head hung low Koneko replied ''yes that would be us plus one more but be stayed behind and will apologies tomorrow''

''He is in the garden after he has done what he need to do you three will tell me which of the factions you belong to and I will get Issei to tell you a little about him deal'' with that said Miki showed the girls who was in shock as to how Issei's mother know they wasn't human to the garden

When they got to the garden the saw Issei already had compony of five three males and to females one of the males had silver hair and blue eyes and wearing a green v-shirt with a high collar leather jacket and burgundy jeans the second one had blond hair with a strand going across his face and blue eyes and was wearing a business suit and the last male had brown hair and brown eyes and was wearing ancient Chinese armor one of the females had blond hair and blue eyes and was wearing a sorceress-like dress with huge blue hate that had black bow and yellow stars and a matching cape with flowers and a white interior the last female they know all too well had black hair and hazel-gold eyes and was wearing a black kimono with a red interior with a yellow obi and a set of golden beads and a headband this was Kuroka thinking that Issei was in trouble the girls rushed out to help Issei and started to fight the group of five this went on for a couple of minutes before Issei had enough and shouted ''enough'' but the fighting didn't stop so he turned to Ophis and asked so which way would be better to stop the fighting perfect cube, physical hunt or manipulate the earth''

Before Ophis could say anything, someone said ''I think you should use physical hunt Issei'' they looked to see his mother with ten glasses of milkshake ''and I have always wanted to see that in action since Meliodas told me about it'' and Ophis agreed

''Okay one physical hunt coming up'' Issei said as he get closer to the fighting and when he was closer, he put one arm out and said ''physical hunt'' then all the fighters all collapsed at the same time as Issei's muscles grow

Kuroka who was pissed shouted ''Vali you bastard if you are going to use divine divide you fucking don't use it on your allies''

The blond male said ''I don't think that it was Vali Kuroka because in order to use divine divide he needs to touch someone so it must be someone else''

''you got that right'' Issei said ''now I am going to conduct my business then I will return your strength then I will explain everything'' then walked over to Kuroka then placed his hands on her head then a strand of pale blue light came out and then Kuroka stopped

Inside Kuroka's mind we find Issei looking through Kuroka's memories in order to find out why she did and when he did, he understood why she killed her master then he exited her mind

In the real world the light coming out of Issei's hands disappeared then everyone had got their strength back then everyone sat up then Issei said ''now that you have your strength back are you going listen or am, I going to have to take it away again''

Rias said ''okay you win''

''Okay then have a seat and I will explain why Kuroka is here'' Issei began

Flashback ten minutes ago

Issei was in the garden with Ophis when a red circle appeared followed by Sirzechs who said '' hiya Issei and to you to Ophis first of all I just wanted to apologies for the misunderstanding with my sister the order to kill you was not properly ordered and secondly I want you to do a mission and before you say anything I got permission from your grandfather''

''Okay I will do it what do I have to do'' Issei said

''I want you to find out and eliminate Kuroka'' Sirzechs asks

''That's fine but you know Sirzechs that if there was a good reason why she did it Issei will not do it'' Ophis stated

''Yes, I am aware of that'' Sirzechs replied then hand Issei a piece of paper with a summoning circle ''now after you find you why she did what she did or kill her use the summoning circle''

Then Sirzechs went out of the front door while Issei was preforming a summoning spell of his own to summon Kuroka but he got five people included Kuroka he started to explain when Rias, Akeno and Koneko interrupted

End of flashback

''Now there you have it'' Issei said ''you are now free as long as you don't do anything stupid Kuroka''

''Wait what do you mean she is now free she killed her master'' Rias said

''Just as I said she is free as I will place her under my protection'' Issei stated before continuing ''and do you even know why she killed her master in the first place I am sure you believe it was because she became drunk on her own power but that is a lie she did it to protect her only family she had left as her asshole of a master was planning to do some test on her younger sister'' shocking everyone but mostly Koneko

''So, you put me throw hell because you killed your master in order to protect me'' Koneko asked

Kuroka who couldn't look Koneko in the eyes said ''it was never my intention for that to happen to you I didn't think that my crime will be placed on to you and that will be a regret but how did you know why I did what I did''

''Simple I looked through you memories and before you asked I only looked at the necessary memories'' Issei said before continuing ''and one of my magical ability known as invasion and it allow me to enter someone's mind and if I wanted to I can manipulate someone memories and soul'' then took out the summoning circle to summon whoever was on the other end which turned out to be Grayfia who walk up to Issei and gave him a kiss on the lips which shocked the girls

When Grayfia looked and saw Kuroka alive then said ''So what did you find out'' after a couple of minutes of explaining when he was done Grayfia said ''and so you plan on placing Kuroka under your protection'' which got a nod ''okay then I will go and report back to Sirzechs then'' then she summoned a circle then went back home to report

Rias who was the first one out of being shock asked ''what was that all about and why did Grayfia kiss you''

''Okay I will tell you everything if you give me a chance'' Issei said

The harem is as fallows Rias, Akeno, Keneko, Kuroka, Xenovia, Asia, Irina, Rossweisse, Grayfia