The Demonic Hero

by angeal666

when Izuku was attacked by the villain he he met two beings that gave him a chance to become the hero he want to be by giving him a quirk that is similer to OFA rating may change

2. Chapter 2

I don't own My Hero Academia

Izuku will have a harem the list will be at the end of the page

Izuku won't get OFA but will gain one similar to the quirk (powers from other anime/cartoons) rules will also be the end of the page

''humans talking''

''spirit/god/all might/demon talking''

''thinking''

It has been four days since Izuku had gained his quirk which he named Noble Guardians due the what the aspects did or do and he has clothing from all his known aspect from his quirk like wearing Gi with the top open with a chest binder just in case he gets hit with cold water and the Gi had several symbols on it and each symbol had something to do with what he can do had his hair was done in to a pigtail and he wore a straw hat that hat two holes in for this ears though none of them had any weights as all agreed to do that when Goku started his training and also had the Saiyans appetite

Three days since Nezu's exam and right now the Midoriya family are heading to the airport with Nezu and Toshinori whom they know is All Might due to Inko being the new assistant at UA high so she get to know all the minor injuries though major one for Toshinori's case and with Izuku enhanced sense of smell and the latter being the driver

Nezu looks over to Izuku and said ''Izuku you know the exam I had you do the other day''

''yes, you never told me the purpose of it and said that you will tell me when you get the results'' Izuku replied

''current and I got the results just this morning and you had pass the exam'' Nezu said

''cool though I am pretty sure that I would be more excited if I knew what exam I passed in'' Izuku said

''I see you point Izuku so here is the exam's purpose it was to get you to graduate early'' Nezu said and when he saw the confused look that both and his mother had he said ''what I mean is you have officially finished middle school though I did have to give a really good reason for setting it up for you''

''and what was the reason you gave them to get him the exam Sir'' Inko asked

''I gave them a few like his quirk just awakened and need time to get used to it so he doesn't hurt anyone his middle school being unfair like teachers not treating the student fairly, and him being smart enough to take it'' Nezu said

Then Izuku realized what then little chimera animal was doing said ''I think I get it now you set the test up so I can train so I can get a decent control over my powers before the UA test and so the school can't mess with my test if I had stayed''

''current Izuku'' Nezu said then looks out the window and said ''looks like we are here'' causing both Inko and Izuku to look out the window and see that they was at the airport then Nezu turns to Toshinori and said ''Toshi can you stay in the car you can drive off and park up and I will call yo when we are coming out after all we shouldn't be more than an hour as Izumi's flight comes in fifteen minutes''

Toshinori looks up into the rear-view mirror and said ''okay sir'' then pulls up on the curb and Inko Izuku and Nezu gets out then head into the airport as Toshinori drives away

After waiting for twenty minutes Izuku was coming back from the toilet when he spotted a girl about the same age and with the same green shade he had before his transformation dragging around a large suitcase looking around and having a gut feeling he knew who she was he walks up to her and said ''Izumi is that you''

After hearing her name Izumi turns around to see a silver haired boy that seemed familiar but couldn't place him anywhere as she has never meet a silver haired male before then said ''yes I am Izumi can I help you''

Izuku then grabs his older twin sister luggage then says ''come on Izu-chan mums waiting for us''

Izumi hears what Izuku says and said ''wait Izuku is that you''

Izuku looks back to his sister with a big smile and says ''yes I am now come on mum's missed you a lot and so have I its good to see you''

As the Izuku leads Izumi to where their mother is waiting for them Izumi asks ''hey Zuzu can I ask what is with the cute dog ears and tail and I am surprized that mum let you dye your hair to that colour what was wrong with the having green hair''

Izuku chuckles a little then said ''well Izu my change of appearance is because my quirk finally manifested'' shocking Izumi

When Izumi came out of the shock said ''but that can't be because your quirkless''

''yeah, I will tell you more about Noble Guardians when we get home or someplace private as its origins isn't normal'' Izuku replied

''what is that supposed to mean'' Izumi asked

''you'll find out soon enough'' Izuku simply said then saw their mother and said ''hey mum look who I found'' catching Inko attention

Inko looks over to her son to see who he found and saw a girl almost identical to what Izuku used to look like and with small steps she walks over to them while saying ''Izumi is that you'' when the girl nodded Inko said ''my look on how beautiful you have gotten considering that your father was abusing you'' before all three had a great big family hug filled with tears and laughter and Nezu got on the phone to Toshinori as they will be heading out soon

When the reunited family separated Izuku took Izumi's but didn't use the wheels and Izumi looks at her brother and said ''Izuku why don't you let me take my suitcase or use the wheels''

Inko looks at her daughter and said ''don't worry about him honey since he gained his quirk, he has gained some new traits like the cute god ears and tail but also his personality''

Izumi looks at her mother and asked ''what's up with that anyway after all the doctor said that he quirkless and Zuku said that his quirk isn't normal''

Nezu who couldn't keep quirt any more chuckled and said ''ant that the truth but don't worry dear as soon as we are sure that no one can hear us we will tell you everything about Noble Guardians'' and when Izumi nodded he said ''good now he have a few places to go before we take you home''

This confused Izumi so she asked ''okay two things first who are you and second what are we doing''

The chimera looks at Izumi and said ''oh right I haven't introduced myself have I well I am the principal of UA high school Nezu and what we are going to do is go to some shops and get you something for your room''

''what do you mean'' Izumi asked

Inko felt like she should be the one to answer this question said ''well you see honey until yesterday I was using it as a storge room then until we found out that Hisashi was abusing you me and Izuku emptied the room and we found out three days ago the day that Izuku gained his quirk so now we are going to get you bedroom furniture''

''Ohh that makes sense'' Izumi said then said ''okay I think I have held it in long enough but how did you know that I was being abused after all he was careful not to leave any lasting marks''

Izuku chuckled a bit before saying ''lets just say that I just met some really nice friendly people in some extremely high places and those are the places that some people believe they're at or deserve'' then he looks around to make sure nobody is watching then he leans in close and whispers ''and it is people that I got my quirk from'' which seems to confused Izumi even more and when they got out side they see Toshinori waiting for them so they quickly load up then head to a store that sells bedroom furniture

It's the next day and Izumi's room had its furniture of her picking with both siblings building them together after having dinner Izuku told Izumi how he got his quirk and who gave it to him which lead to how Nezu and Toshinori knew how she was being abused and Izumi wanted to deny it but she couldn't for some reason and as both Nezu and Toshinori was leaving the latter had turned to both Izumi and Izuku and said ''now before I leave can I ask you both to come to Takoba Seaside Bay tomorrow at eight in the morning''

Before any of the twins could answer Inko showed up and said ''of they will though I am sure that Izuku would be there for seven''

Chuckling a little Toshinori said ''that I am sure of after all he said that he would do it when he got his quirk'' then Inko lead Nezu and Toshinori outside

When everyone was outside Inko turned to Toshinori and asked ''Toshi is the reason you asked Izumi to the beach tomorrow to do with OFA''

Knowing he couldn't lie to the mother and his doctor's assistant he said ''yes I am going to see if she is worthy of inheriting OFA hope you don't mind''

''weather or not I mind it would be something I have to accept it if she accepts and I know that Izuku will always be there for his sister so that would be a load of my mind'' Inko said then gained a threatening look said ''oh and one more thing Toshi if she accepts you better tell her everything about the origins of OFA to AFO''

Taking a big gulp Toshinori said ''understood ma'am''

Inko grinned then said ''night and stay safe on the way home'' then locked up and then went to bed

As Nezu and Toshinori walked home the animal said ''Toshi I am sure you don't want to want me to remind you but you have to take it easy with Izumi when you inspect her tomorrow''

Sighing a little Toshinori said don't I know it I am not really worried about young Izumi its young Izuku I'm more worried about''

''as you should Toshi cause canines can are very protective about their family and if Izuku has gained more then the canine ears and tail'' Nezu said

It is now morning and the Midoriya twins are heading to Takoba Seaside Bay to meet with Toshinori for eight when they got there they saw Toshinori sitting on the wall waiting for them with a big skip not too far from him and when he saw them he gets off walk over to them and said ''do you know why I asked both of you here''

''well for me I said that as soon as mum gave me the green light I would come here and start clearing it out'' Izuku said

''right young Izuku so you can start after all I know you are raring to get started since your quirk manifested and I need to talk to young Izumi'' Toshinori said

Izuku not needing to be told twice said ''alright and damn right I am raring to go'' then took of like a shot and jumped over the wall not bothering to use the stairs

Toshinori sweat drops then turns to Izumi when she said ''so what do you want to talk to me about''

''are you planning to become a hero young Izumi'' Toshi asked

Izumi looks down ashamed and says ''no I'm not''

Izumi's answer shocked Toshinori and when the shock passed, he said ''how come I think you would become a great hero like your brother''

''its not really Zuku's fault but he is part of it'' Izumi answered

Not really getting or understanding the answer Toshinori asked ''can you elaborate please as I don't understand''

''okay Mr Yagi'' Izumi said then took a deep breath then said ''its just I don't believe I deserve to be one not after how I treated my brother before father took me to the states''

Toshinori look deep in thought before saying ''I see what you mean young Izumi but you can still be a hero and then let your pass guide you into not make the same mistake and it is also what you did along with what he had to put up with for the past ten years that ne now has one if not the most powerful quirk ever known''

Izumi looks away still feeling ashamed said ''I see what you mean but I still don't''

''so let see what young Izuku has to say on this matter'' Toshinori asked then heads to the beach with the female twin following

When the duo they see Izuku carrying a couple of bedside tables up the stairs and when Izuku looks up stops and says ''hey what's up''

''well young Izuku we was discussing whether or not your sister becomes a hero, but she thinks she doesn't deserve to be one because of how she treated you before going to the states'' Toshinori said

Izuku puts the tables down and they had crack on them then took a moment for thought then said ''well I will not lie that I did held it against her but when Kami and Yami showed me what happened I let it go as she only did it so she didn't want to accidently burn someone or something and when she properly did have a decent control over it dad took her to the states plus it turned out perfect in the end after all I got a quirk now'' then he turns to his sister and said ''so now we can become the heroes we want to be together you can't past but you can learn from it and chose your own path but know this Izu no matter what path you choose you will always be my older twin sister'' then he picks up the tables then continues with the clear up while All Might and Izumi goes someplace for their chat

When Toshinori and Izumi sat on a random piece of trash that they could safely sit on Toshinori said ''see your brother has faith in you and he could have easily given up on being a hero but he didn't and look at what the devotion has got him just for having that noble heart so what will you choose Young Izumi will you waste that potential because of what you did when you was five or six or will you prove that you have what it takes to be the hero that your brother knows you can become''

Izumi took some time to think of what to do then a thought comes to mind ''if I become a hero then maybe I can right my wrong'' then she looks at Toshinori and said ''okay ''I'll do it''

Toshinori smiles at Izumi and the teen girl thought she saw and overshadow of All Might and Toshinori said ''that's good now before we do anything what type of hero do you see yourself as or becoming''

Izumi looks at Toshinori and said ''the type of hero I want to be is one that my brother sees me as one that will not turn tail and run and always looking after the community in any way like how we always talked about'' the living version of Skeletor laughed and buffed up shocking Izumi who said ''holy shit Mr Yagi your All Might, and my mother and brother knew and didn't tell me oh my brother is so fucking dead''

Laughing a little All Might said ''now, now young Izumi while it is true that both you mother and brother knew but he only Midoriya I told was your mother because she is now my doctors assistant thanks to a villain I faced five years ago I can only stay powered up for three hours and as for how your bother found out well, he has a very keen sense of smell now the reason I am telling this to you is because I want you to inherit my power''

This confused the teen girl and so she asked ''what do you mean inherit your power''

''what I mean is you can have my quirk which can help you on becoming the hero you want to be and should you accept then I will tell you what it does'' replied All Might

Izumi looks at All Might and asked ''do you really think I can be the type of hero that Zuku can be proud of''

''of that I can say without a doubt you can be that hero and more'' All Might said

Izumi looks All Might in the eyes and said with determination in her voice and you can also see it in her eyes ''okay All Might I accept''

''excellent that's good too hear'' All Might said then he gained a bashful look then looks away and said now I need you to strip till you're in your underwear''

Gaining a massive blush she said ''I have to do what''

All Might looks around to see if Izuku was coming for him then breathing a sigh of relief he turned back to Izumi and said ''young Izumi this isn't what you think it just that I need to inspected your body to see if your body can handle One For All cause it has the collective strength of all past users like a sacred touch''

''Ohh I understand but mind giving me some privacy'' Izumi said

''of cause just call when your ready for the inspection and not a moment before as the last thing I need on me ass is you overpowered brother'' All Might said then going behind a pile

After about five minutes Izumi said ''I am ready All Might''

All Might came out from the pile he was behind then walked over to Izumi to inspect her then said ''well thanks to your father you can receive OFA now though you might not be able handle it all but that's what we are here for'' then plucks a strand of hair then presents it to Izumi and says ''now young Izumi for you to gain OFA you must ingest the DNA in the current host so eat this''

Izumi took the strand then looked at All Might and said this better be clean other wise I'll roast your ass'' and to add effect smoke came out of her mouth then she ate it then said ''now what''

All Might deflates then said ''while we wait for your body to absorb OfA I am going to tell you the origins about OFA and its counterpart All For One'' then he told her everything to do with OFA and how he get the injury

When story time was over Izumi felt a rush of power then said ''wah now that's a rush''

Toshinori then said '' that's good now that you have absorbed OFA we begin you training to handle all the power that comes with OFA'' and for the rest of the day the twins was clearing the beach and when the kids got home Izumi found out that she is going to finish middle school much to her disappointment

5 months later

Its now has been five months since Izuku gained his quirk and he has gained some muscle made three new friends who are second year students at UA

Flashback 4 months ago

Izuku is in one of the training halls at UA with Nezu's permission and would come here while Izumi was at school and train with what ever aspect was teaching him so right now was Ranma and he was using robot when one hit him and sent him flying into a wall when he got up he could hear multiple snickering so he looked round and saw three people at the doorway two male one male is a tall young man with a very muscular build who possesses a number of noticeable scars and blue oval-shaped eyes, and has blonde hair with a really big cowlick the other male look like a tall short-eared elf has messy, indigo hair, which sticks out behind his head, and thin, tired-looking eyes and the final person is a fair-skinned girl with big royal blue eyes that was filled with curiosity her hair is periwinkle that reaches down to her knees and its twisting around itself at her waist and curving inwards around her legs she also has side-swept bangs that's tucked behind her ears on the right and hanging just over her eyes on the left

When the girl sees Izuku looking over she stops and said ''sorry about laughing''

''oh my god a girl is talking to me and a very cute one at that'' Izuku thought before saying ''it not a problem at least this time it was because I did something and not about how my live was''

The blond boy who also stopped laughing said ''what do you mean uh what is your name''

Apon realizing that he hasn't given his name yet Izuku said ''oh right none of us has introduced ourselves yet well I am Izuku Midoriya''

The girl walked up to Izuku and gave him a big hug that included placing Izuku's head in between her breast turning the 14 year old boy into a blushing mess and said ''you are pretty cute Izuku especially with the dog ears and tail any way I am Nejire Hado''

The blond walks up and said ''now that Nejire has gone allow me to introduce myself I am Mirio Togata'' then points to the boy who seemed shy and said ''and the shy boy over there is Tamaki Amajiki''

Izuku who manage to get out of Nejire's grasp said ''well its nice to meet you three''

Nejire said ''well its nice to meet you to''

''hey Izuku, I have gotta ask you two questions'' Mirio said

''okay ask away'' Izuku said

''okay my first question is any relation to the new assistant in the infirmary''

''yes she is my mother'' Izuku replied

''cool and my second question is what are you doing here and not in class'' Mirio asked

Before Izuku could answer the voice of Nezu said ''I can answer that Mr Togata please bear in mind that I will not go into detail'' when he saw Mirio and Nejire nod he said ''up until last month Mr Midoriya was quirkless but somehow gained one and because he was quirkless he had to face prejudice and so because of that I mange to get him the exam that lets him leave school now his quirk is very powerful as it has spirits and each one of them is quirt powerful on their own though each of them has their own drawbacks''

''what do you mean sir'' Nejire asked

''what he means Nejire it that each of my aspects they are give or take as strong if not stronger the All Might but they have a curse on them though a external means or their biology for instance one ate something called a devil fruit think of these fruit like a eatable quirk to gain power but you cannot swim again then I have another one that is a half-demon that loses his power on nights of the new moon''

The three students went wide eyed and Nejire said ''oh my''

Mirio looks at Izuku and said ''you have a great quirk Izuku and should you need a sparring partner just give me a call and I will gladly give you a hand''

Izuku was shocked by what Mirio said and before he could say anything Nejire said ''count me in as well as I wouldn't mind spending time with someone as cute as you''

''thanks guys but what about your studies'' Izuku said

Nezu looked at the trio of second years and said ''do you three really want to help Izuku'' and when they nodded the principle said ''okay then I will arrange it so you three can come here during the last your last period and help train Izuku'' when he said that the trio was about to say something but Nezu continued ''whoever there is two condition the first one is your grade do not drop as it is you three are the best in your year so I am giving you all some privileges'' then he gains a serious look then said ''however should your grades slip you are back in class understood'' then when the trio nods Nezu said ''good now the second condition is I am giving this to you to help Izuku as there is only so much experience you can gain from a robot so some human experience would do him some good and that is where you three come in you''

Nejire then realises where the chimera animal is coming from and said ''I think I get it sir you want us to help Izuku train cause a robot cant think of a counterattack whereas human can''

''correct Nejire however should one of you not show up here then I will take away the privilege understood'' Nezu said

''yes sir'' came all three voices of the students

''good'' Nezu said then he turned to Izuku and before he could say anything the boy said ''I know what you are about to say sir or at least I think so should I slack of you will remove them as well and place them back in their call''

Whether or not Nezu was shocked nobody could tell this was all he said in his usual calm voice ''correct and also let me know if one of them doesn't show up okay'' and when Izuku nodded he said ''good now of you go your mother want to examine you'' then Izuku run of toward the infirmary

Flashback ends

When it was Inuyasha turn Izuku learned that there are two type the physical ones and the spiritual ones which needs a special sword which he has yet to awaken and with that being said he decided to become ambidextrous as no doubt that then he does unlock it that sword will manifest like tessaiga did and had also learned tessaiga was complete but didn't say what made it complete

Right now he was having a day of training mother's orders and she decided to send him to dosome shopping when a metallic scent hit him and knowing what that smell was he run toward it with great speed and after a couple of minutes he get there he saw one of the water hose heroes fighting a villain that seem to have really big muscles and the other was dead so when he saw the muscle villain about to land the finishing blow on the other hero he picked up a rock and throw it at the villain as he said ''hey why don't you fight someone who can fight back'' then runs to get the hero that is still alive he picks her up then takes her to the edge

Once he places the water hero down she said with a grant ''thank you''

''no problem'' Izuku said the run to get Her husband's body

As he muscle bound villain turns to where Izuku stood he said ''what the where did that god damn brat go'' then started to look around and saw him put the female water hero down then disappeared again then thought ''he will most like go there again so if I time it just right then I can grab him'' then runs over just as Izuku reappears with the dead water hero and just after the teen places the hero down he turn to see the villain grabbing him by the head laughed and said ''not so tough now are you kid but you can never beat me as I am the Muscular'' then saw tessaiga then said ''my that's a nice looking sword you got there mind if I have it''

Just as Muscular about to grabs the sword but Izuku tried to stop him and said ''I cant let you have it other wise you are not only going to doom yourself but everyone here''

The villain was surprized by the Izuku strength but just increased his muscles and once he take it from Izuku he throws the teen though a wall then draws the sword and inspects the sword then said ''very nice indeed I gotta say the brats knows his stuff'' the looks at the injured water hero then lifts up the sword and just before he brings it down the air went still and had a chill about it then slowly looks to the hole he throw the kid in so does the hero

At the hole Izuku walks out but he didn't look like the kid that looked friendly as his eyes had changed from his green dog like eyes to his eyes Blue with red sclera and had a murders look and had jagged purple stripes then he said with a tone that sent a chill down the hero's spine ''hey asshole we aren't done yet or are you on those pathetic humans that likes to feel strong by beating even we demon have some standards though there are some demons that are like you''

Muscular got mad and charged at the demonic Izuku with tessaiga raised and said ''that's it I am going to kill you with your own sword'' however before he knew what had happened he felt intense pain around the top left side of his face then he looked at Izuku and saw he was holding an eye then it had hit him then said as he bring then sword at him indenting to kill him ''now you are going to pay for what you just did''

Izuku just laughed as he moved out the way of the sword then hits the villain's hand which sends the sword flying then he said ''I drought that's going to happen because I am going to kill you now'' then he lifts up his clawed hand and was about to strike when two earth hands grabbed him and Muscular as Izuku tried to get out he said ''if I find whoever did this I am so going to kill them'' then he sees a group of pros wearing cat themed suits and one with blond hair crouching down and see a brown haired one walking over to the water heroes

The hero that was walking over to the down water heroes said ''hey Mizu how are you doing''

''hey Shino, I am doing alright considering and its thanks to that boy cause if he didn't show up here I might be dead right now'' Mizu said

''so tell me what happened'' Shino asked and Mizu examined what happened then once the explanation was done Shino went to pick up Tessaiga while another member went to pick up it sheath then he hands it to Shino who sheaths the sword

Izuku was trying to break free and some how did manage to break the earth and was about to charge at the cat themed heroes when a cloth caught Izuku and everyone looked to see eraserhead aka Shoto when he saw the look Izuku had he said ''so that's what you meant Inuyasha'' then he turned to the pros and said ''do any of you know where his sword is''

Shino looks at Shota holds up the sword and said ''is this the sword''

Shota looks at the sword and said ''yes it is''

Shino gives the sword to Shota and said ''what's so special about this sword if you don't mind me asking''

Shita takes the sword and gives it to Izuku who passed out the moment he touched it then said ''it is a special sword that keep one part of his quirk under control so he needs it with him at all times which can be a nightmare at time as you get those pros who just causes a scene just because Izuku doesn't hand Tessaiga over then claiming he is a villain even when he say he has permission from several pros and from two doctors''

Before Shino could say anything she heard ''uhh what happened and why am I in your capture net Shota and why do I have a headache the last thing I remember was trying to stop Muscular from getting Tessaiga''

''well I am sorry to say that you failed in that regard and your demonic side came out'' Shota said as he let him go

Izuku looks down and said ''oh I see I didn't hurt anybody to badly did it'' looking at his bloodied hand

A member of the cat hero group walked forward and said ''well aside from the villain nope though you was about to attack us''

''well that's good'' Izuku said with a relieving tone then said ''now I am going to clean this blood of off me'' then heads to bathroom all the while Shota was giving the wild, wild pussycats a brief run down on Izuku's quirk then after about five minutes Izuku returns and said ''so what now''

''well right now we are going to clean up this mess while we wait for the police and ambulance to get here then I am going take you home cause the last thing I need is you mother on my case about what happened today and not take you home'' Shota said

''I see'' Izuku said then see Mizu crying so he walks over and said ''hi how are you''

Mizu looks at Izuku and said ''I am good considering and thanks to you I can go home to my boy though I just wish Hosu could come home''

Before Izuku could say anything Inuyasha spoke ''hey kid remember what I said about the Tessaiga being complete'' and when Izuku nodded Inuyasha continued ''well when I had the Tessaiga there was another sword that came from Tessaiga called the Tensaiga and as you know the Tessaiga can Kill a hundred enemies with one swing well the Tensaiga can heal a hundred people with one swing and can even bring the dead back to live but it one revive per person''

''that good to know'' Izuku thought then turned to Mizu then said '' I can help you with that wish if you want''

This shocked everyone and Mizu who said ''you can how''

''how I can isn't important but you must not tell anyone about it okay'' Izuku said and everyone nodded he drew his sword then looked at Hosu and saw small creatures all over then he swung the sword killing the creatures and then after a minute or two Hosu's body began to move the he sat up wandering what happened and got the short version then after an hour the police took the villain way and the ambulance took the water heroes who both agreed to retire and be there for their son

That's all for this chapter

Izuku harem

1A girls Itsuka, Nejire

Add suggestions please cant guarantee I will add

Cant think of a named for Izuku's quirk so please send me some suggestion

Rules for quirk only one they must have something that effects their body in someway or form like a curse though eating a devil fruit (one piece) or fulling into a cursed spring (Ranma ½) or biology like Inuyasha losing powers or going berserk (Inuyasha) you Saiyans being weremonkeys (dragon ball series) so nothing like escanor (Seven Deadly Sins) Yuna (Kuma Kuma Kuma bear) Rimuru (that time I got reincarnated as a slime)