The Devil Kings Son(BNHA x Hi...

By KingjblakkTheGOAT96

28.9K 701 319

Going through his entire life hated and abused izuku does not wish to be a hero lie every other child his onl... More

Prologue
Harem(DxD)
Harem(MHA)
Chapter 1:The Black Dragon Awakens
Chapter 2:Hiei Returns
Chapter 3: A Father's Wrath
Chapter 4:Father & Son Reunited & Inko's Punishment
Chapter 5:Goodbye Izuku
Chapter 7:Change
Chapter 8:New Life & Marriage Proposal?
Chapter 9:Encounter! Izuku Meets Esdeath
Izuku's Peerage
Chapter 10:The Real Me
Chapter 11:Izuku Vs Rob Lucci
Izuku's Sacred Gear Info
Chapter 12:The New King
Chapter 13:Target: Izuku
Chapter 14:Stella & Izuku
Izuku Peerage Stats
Chapter 15: Leveling Up
Izuku's Peerage Familiars
Chapter 16:Taken

Chapter 6:Welcome To The Underworld

1.5K 34 48
By KingjblakkTheGOAT96

"Kill the boy and let the man be born"

Maester Aemon

Izuku appeared in front of a giant house he then looks around and sees the sky was red with red clouds

Hiei:Not what you expected huh?

Izuku:Yeah I mean I was expecting more fire and all that

Hiei:Don't believe things until you see them with your own eyes come on let's go inside

Izuku was amazed seeing the massive house in front of him

Izuku:Is this really where you live, dad?

Hiei:Yeah come on lets go inside

They go inside to see many different maids there and butlers they all bowed to hiei and mukuro as they made their way through the hallway suddenly hiei and mukuro were tackled by someone hugging them

???:Dad mom your back

A butler came into the hallway

Butler:Oh hello there lord hiei lady mukuro

Mukuro:Hello kenji-looks down-and hello to you as well enju

Enju:I was waiting for you to come back guess what I beat ms. kitana at shogi

Hiei:Well thats great kid

He then looks at izuku

Hiei:Izuku this is your little sister enju-looks at enju-enju this is your older brother izuku

Both kids stare at each other as izuku walks up to her giving her a gentle smile

Izuku:Hi enju I guess I am your big brother its nice to meet you

Enju:So your the brother dad told me about yay I have a big brother

She leaps and gives izuku a hug which he returns

Izuku:(Thinking)I can't believe I have a sister

Hiei:Come on izuku there is some people I want you to meet

They then make their way to the living room where they see 3 people sitting down there they see the family enter the room

(Ajuka beelzebub Serafall leviathan Sirzechs Lucifer)

Sirzechs:Oh so this is your son hiei

Hiei:Yes this is my son izuku

Izuku looks at the 3 individuals curiously as the girl with pigtails hairstyle spoke

???:He is too cute!

Izuku was shocked hearing this as the girl was now standing in front of him in his face

???:You are too cute like an adorable little cinnamon roll

Izuku looked at the girl as he blushed and looked away from her

???:-Giggles-Aw I made him blush he is just the cutest

Hiei:Serafall stop teasing my son

Serafall:Aw ok hiei

Hiei:Izuku these are the other 3 devil kings I told you about

Hearing that izuku immediately bowed showing respect as sirzechs walks up to him with a chuckle

Sirzechs:You can stand izuku its a pleasure to meet you I am sirzechs lucifer

Serafall:And my name is serfall leviathan but you can call me

She spins around and poses

Serafall:Little leviathan handsome

Izuku blushed once again this time the green haired man comes up to him

???:My name is ajuka beelzebub hiei told us about you and the power you possess

Sirzechs:Yes, hiei informed us that you had sacred gear but what is it?

Izuku:Well it's the black dragon anubis the apex dragon

All their eyes went wide except for hiei mukuro and enju's

Ajuka:But how he hasn't been around in centuries

Sirzechs:Incredible the black dragon of the apocalypse himself

Anubis:-Out Loud-It's good to know I haven't been forgotten

Ajuka:He spoke

Anubis:Hm yes it certainly has been awhile tell me what has come over my idiot brethren ddraig and albion

Sirzechs:Well they haven't awoken yet anubis

Anubis:Really what a pity oh well

Ajuka:I never knew that anubis out of all the dragons would appear again

Izuku:Wow anubis is really famous

Sirzechs:Well he is a dragon god and to see you be his wielder you have quite the reputation to live u to being both the black dragon and the son of hiei

Hiei:Ok so kenji why don't you take enju show izuku around the house we have things to discuss in private

Kenji:-Bows-Ofcourse lord hiei come along master izuku

Izuku:Right

They leave the room as hiei then spoke

Hiei:Ok now let's get down to business

In The Human World

???:YOUR KIDDING IZUKU IS HIEI'S SON!?

Koenma who was with botan with everyone gathered at yusuke's house kuwabara kurama keiko yukina and genkai

Genkai:It was hard for me to believe at first myself

Koenma:Well knowing hiei's personality I am surprised he let that woman live

Kurama:Nezu managed to talk him out of it and mukuro

Botan:What I can't believe is that izuku has a sacred gear and the black dragon anubis at that

Keiko:Can someone please explain anything about this dragon is he friend or foe?

Koenma:Anubis was 1 of the 12 dragon gods also known as the father of all dragons because many of the dragon kings was born from his lineage his power was so great that he became feared even among the dragoon gods themselves 

Yusuke:Woah that dragon sounds pretty bad

Koenma:Yes but we have nothing to worry about anubis doesn't care that much for human devil or fallen angel life at that

Kuwabara:These 12 dragon gods how strong was he in strength wise

Koenma:Well anubis was ranked the lowest and weakest amongst them but he grew in rank and became stronger so strong he got the number 1 spot when this happened it caused a civil war amongst the other dragon gods and a great battle ensued which resulted in anubis and 2 others being the survivors that was anubis slyfer and nova

Yusuke:If anubis was so powerful then who the hell killed him

Koenma:Well I heard stories that the wounds anubis suffered in the final battle was the reason but I am not 100% sure

With Kirishima

Kirishima was walking home with ochako and a new friend of theirs

Mina:So kiri what do you guys have planned for today?

Kirishima:Not really sure

Ochako:What about going to the arcade?

Kirishima:Hm sure why not

Mina was kirirshima's neighbor and friend since they younger she went to a different school

They all were walking into town heading towards the arcade but they ran into a group of people

Katsuki:Oh look who it is

Katsuki izumi katsumi and shoka without shoto was standing in front of them

Katsumi:Its deku's little gang of extras

Kirishima:It's you guys, what do you want?

Izumi:Where is that rat deku?

Ochako:Why do you want to know?

Izumi:He hasn't been seen since he ratted us out to the whole world. Is he hiding from us?

Ochako:Why would izuku hide from you after all he was never scared of you even with your quirks

Katsumi:Stop stalling round face and tell us where deku is

Katsuki:Or else

He forms small explosions in his hands but ochako holds out her fist with a smirk and channels spirit energy in it

Ochako:Don't start something you can't finish clowns it would be smart to walk away or don't and get your asses kicked Izuku is not around to do it but I don't mind taking his place and the names ochako you dog faced bitch

Mina:Why don't you guys just get out of our way

Izumi:Just tell us where my idiot brother is and we will

Kirishima:Yeah well if your looking for izuku he went to go live with his dad good luck finding him

He then lowers ochako's arm as she cancels her energy and they walk past the group and makes their way to the arcade

In The Underworld

In the last 2 weeks izuku has adjusted to his new life in hell right now the green haired boy was putting on a tie but was having some difficulty

Izuku:Dammit

A knock then comes at his door

Izuku:Come in

Mukuro comes in

Mukuro:Are you ready izuku?

Izuku:Almost I just can't get this tie

She walks up to him and helps adjust his tie on him and ties it completely

Mukuro:-Smiles-There

Izuku looks in the mirror

Mukuro:You look really handsome izuku

Izuku:Thank you mo-I mean ms. mukuro

Mukuro was a little hurt that he didn't call her mom but knew the boy had been through a lot and it will take some time for him to open up to her

Mukuro:Come your dad is waiting

They both make their way downstairs to see hiei dressed in his suit and enju in a blue dress

Hiei:I see your ready

Izuku:As ready as I'll ever be

They are heading towards a gathering of all devils as this was being attended by all devil kings

Hiei:Izuku

Izuku looks at his father with curiosity

Hiei:I want you to be careful when your here these are noble devils that will try anything to provoke you do not let them make you scared I want you to stand your ground if anyone tries to hurt you you have my permission to defend yourself

Izuku:I understand

A magic circle appeared beneath them and teleports them to the house of sirzechs lucifer

They knocked on the door as it was opened by sirzechs wife

(Selina lucifer wife of sirzechs lucifer)

???:Oh hiei mukuro enju and you must be izuku sirzechs told me so much about you

Izuku bows in respect to her

Izuku:It's a pleasure to meet you ma'am

She lets them in as sirzechs arrives to greet them

Sirzechs:Oh hello hiei mukuro izuku enju it's so good to see you

Hiei nods as mukuro greets him

Enju:Hello sirzechs-bows-is milicas here?

Sirzechs:Yes he is with grayfia

???:Enju!

They all look to see millicas who was with grayfia run up to her

Izuku:That kid its like he is sirzechs twin

Sirzechs:This is my son milicas say hello milicas

Milicas:Hello I am milicas gremory it's a pleasure to meet you

Mukuro:Great manners you have a fine kid selina sirzechs

Selina:Thank you

They made their way through the house and made t to the main room where they see many of the noble devils present as they all bowed to hiei and sirzechs showing respect to the devil kings izuku looked at the devil's present that were staring at him he remained cautious until he was tackled by someone

???:IZU-CHAN'

He sees serafall hugging him as he returned the hug

Izuku:Hello serafal

Serafall:It's so good to see you here

She then releases him from her grasp

Hiei:Seems like serafall realy likes him

Mukuro:Yes seems like it

Izuku:Its nice to see you Lady serafall

Serafall:Aw what did I tell you to call me izu-pouts-

Izuku:We are in the presence of devils noble devils at that I should show you respect

Serafall:Ok you have a point 

Izuku:Um dad I am gonna walk around, is that cool?

Hiei:Yeah go on ahead

Izuku then walks off walking around he sees he is getting looks from some of the nobles present he pays it no mind but stayed on guard he found a book in a room that was a big filled with many other books

Izuku:Hm leave it to sirzechs to have his own library walking further inside he finds a book and it says

Izuku:Sun tzu the art of war

???:May I ask what you are doing here?

Izuku looks to see the silver haired maid grayfia looking at him with her impassive gaze

Izuku:Oh I am sorry I was just looking around is it alright if I take this book to read I am not much of a party person

Grayfia:Hm I suppose it wouldn't hurt you may take the book but be sure to return it

Izuku:Thank you ma'am

He then leaves and goes back to where the party was

Hiei walks up to ajuka

Hiei:Beelzebub

Ajuka:Yes, what is it?

Hiei:I need to speak with you about something

Izuku made it back to the room where the party was held he sits down at a table away from all the noble devils he then hears some whispers

Noble Devil:-Whispers-You heard the rumors that kid is hiei's son how dare the devil king disgrace our race by bringing him here

Noble Devil 2:-Whispers-I know that bastard does not belong here

Noble Devil 3:Seems like hiei just does not care about our species after all bringing that boy here to think he was chosen to be the devil king is just sickening

 Izuku sighs and just ignores this as he continues to read his book but he glanced to his right seeing 4 people come to his table

???:Excuse me, is this seat taken?

Looking up the green eyed boy saw 3 girls who looked older than him but 1 was really short and 1 blonde guy

Izuku:No feel free to sit

???:Thank you

The red haired girl takes a seat as her peerage sits down as well

???:Your name is izuku right my brother told me about you my name is ri-

Izuku:Rias gremory heiress to the gremory family I know about you my dad made sure he told me about the heirs to each family its nice to meet you as well

Rias:Hm well let me introduce you to my peerage this is my queen akeno my rook koneko and my knight kiba

Akeno:Hello

Koneko waves

Kiba:Its a pleasure to met you

Izuku:It's a pleasure to meet you all as well 

Rias:So izuku, how have you liked being here in the underworld?

Izuku:It's a better upgrade then the human world that's for sure its gonna take some time but I believe I can adapt to being a devil

Rias:I see so what was it like for you back in the human world?

Izuku:Hm no offense but I would rather not talk about that after all I just met you

Rias:Well that is understandable seeing as we just met

Izuku:Is there something I can do for you lady rias?

Rias:Hm no I am just making conversation am I making you uncomfortable?

Izuku:No but I am quite sure a lady of your status wouldn't want to be seen talking with me although I am the son of a devil king I can kinda see how nobles see me

Rias:Don't worry we won't judge you

Izuku:Forgive me if I do not believe you

He moves his eyes away from the book to look at her he had to admit rias is the prettiest girl he has ever seen along with akeno and koneko who for some reason he wanted to pet her

Kiba:Asmodeus-

Izuku:You can call me izuku I don't care much for honorifics

Kiba:Oh ok then

Izuku:Look sorry if I am being rude it's just in the human world I had people I thought were my friends but they turned their backs on me I do have people I can trust there but my dad told me to be weary about some devils

Rias:That completely understandable izuku but like I said we will not judge you we all have had bad past I can assure you none of us will do you any harm-smiles-

Izuku blushes a bit seeing her smile he then looks away

Akeno:Uh oh seems like someone likes you president

Izuku then cleared his throat ignoring akeno's teasing

Izuku:Well I guess it wouldn't hurt to try and be friends

Rias:I would like that

Kiba:Hey izuku I have a question for you

Izuku:Go ahead

Kiba:Did you ever practice kendo before?

Izuku:As a matter of fact I did at the beginning of my 1st year of middle school but I got kicked off the kendo team

Rias:Why was that?

Izuku:Teachers at my school did not like me and let's leave it at that

Rias then notices the book he is reading

Rias:The art of war, what made you take interest in that book?

Izuku:Knowledge is power. This book can come in handy for learning many things, so I can tell you and sirzechs are brother and sister huh?

Rias:Yes I am the little sister of the devil king

Izuku:Hm seems we have something in common both related to devil kings only difference is I have to do my hardest not to add shame to my father's reputation

Rias:There is no shame in just being born izuku your father loves you and him bringing you to this party shows it

Izuku looks at her a bit surprised hearing that he then gains a small smile

Izuku:Thanks

Rias:No problem so what abo-

???:Oh there you are my lovely rias

Hearing that her eyes narrow in anger as a blonde man walks over and places his arm around her

???:Riser has been looking all over for you my dear

Rias:Go away riser I don't have time to deal with you

Riser:Aw that's no way to talk to your fiance rias

He then turns to look at izuku who was reading his book

Riser:Oh your talking with the bastard boy what was your name again

Izuku ignores him and turns the page on his book

Riser:Hey brat riser asked you a question

Izuku looks at him

Izuku:Go away you don't interest me at the moment

Hearing that the gremory peerage were shocked as izuku said that riser didn't like that at all

Riser:You dare talk to riser like that you a half breed bastard

Everyone in the room had their attention turned to them

Riser:Riser heard that you were the son of hiei asmodeus how disappointing to think that a devil king would bring his own bastard child to an event such as this you should show some respect to your betters boy

Izuku:Why is it that every blonde person I meet is an egotistical asshole

Riser:What was that!?

Izuku:Oh you didn't hear me let me talk in 3rd person like you izuku thinks riser should take that stick up his ass and go fuck himself

Riser was angry at this but izuku kept talking

Izuku:You think I'm gonna show you respect because of your stupid title or because of who your family is please your nothing but sad little bird who needs to get over himself

Riser:You mouthy brat

Riser was getting pissed seeing izuku talk to him like that in izuku's eyes he reminded him so much of the bakugou and todoroki's izuku then stood up and closed his book and went to walk away

Izuku:I am done with this conversation your not worth my time

Izuku then walks away but riser was pissed being talked down to he forms a fireball in his hand

Riser:DON'T YOU DARE TURN YOUR BACK ON RISER YOU LITTLE PUNK!!!

He thrust his hand forward shooting the fireball at izuku but the green haired boy turned around and punches the fireball dispelling shocking the phenex heir izuku then rushed and delivered a ferocious punch to the blondes gut

Riser was sent sailing across the room as he hit the wall hard leaving a crack in it

Izuku:Well would you look at that bird boy can fly without his wings 

Riser:YOUS BASTARD I'M GOING TO-

He felt the release of immense power being released turning to his right he saw hiei walking up to him with an angry look on his face

Hiei:I never thought you would be stupid enough to cause a scene and attack my son but I guess I was wrong

He stopped in front of riser who was sweating he found it hard to breath under the power of hiei

Hiei:now how should I end your pathetic life

A blonde man steps in front of hiei

Lord Phenex:Lord hiei-bows-please do not kill my son I know how foolish he has acted today please spare him

Hiei:He attacked my son that is something I will not let that slide so easily

Lord Phenex:Please I will make sure he is punished for his actions my lord

Hiei:Hm fine then but if he pulls another stupid stunt like this again you and him will be killed am I understood!?

Lord Phenex:Yes sir thank you

Izuku then walks up to sirzechs and bows

Izuku:I am sorry for that lord sirzechs I caused destruction in your home

Sirzechs:It is fine izuku riser started the whole thing so you are alright

Izuku:I see here I borrowed this book from your library to read I am returning it to you

He tries to hand sirzechs the book only for the red head to shake his head

Sirzechs:No keep it consider it a gift for what happened today

Izuku:Oh um thank you sir

Before he ca walk off rias came up to him

Rias:Izuku

The green haired boy looked at the crimson haired beauty wondering what she wanted

Izuku:Yes?

Rias:I am sorry about that riser can be such a pain I swear

Izuku:There is no need to apologize for another person's stupidity uh I hope I can see you again lady rias

Rias:Just rias

Izuku:Ok rias well see you around

The event continued on with the phenex family leaving due to risers stunt after everything was done they all started to go home the asmodeus family then left and went back to their home

Izuku was in the dojo of his family's home he was staring at a sword on the wall he walked up to it and took it off the wall he unsheathes the blade and held it by the hilt

Izuku:Wow

???:Like the blade?

Hearing that izuku turned to see his father at the entrance with his arms crossed as he walked up to his son

Izuku:Oh sorry dad I was just admiring the sword

Hiei:Its fine its the sword I used a lot back when I was with yusuke kurama and kuwabara those idiots stayed getting into trouble

Izuku:Uncle yusuke did say you all had some insane journey's

Hiei:Do you know how to use a sword?

Izuku:Well I was in the kendo club in elementary through middle school I never cared to much to be a hero I just felt it wasn't for me so I wanted something else

Hiei:You were apart of the kendo team at your school?

Izuku:Yeah some people thought I was so good it was like I was born to wield a sword

Hiei:Heh well you have my blood flowing through your veins so of course you would know how to use a sword

Hiei then looks at him seriously

Hiei:Izuku starting tomorrow you will begin your training with me it is time that you learned everything you need here

He then gives izuku a bag the green haired boy took the bag and brought out a chess queen piece

Izuku:Chess pieces?

Hiei:No, those are evil pieces you can use to form your own peerage. You remember what I told you about peerages, right?

Izuku:Yeah you can revive a human and reincarnate them into a devil but why am I getting these I am not a high class devil

Hiei:It doesn't matter you are my son and the heir to my house therefore you will be getting your own peerage that way you can compete in rating games against other devils and rank up

Izuku:I see well thanks dad

Hiei:Don't mention I want you to have the same advantages as-

Izuku:but I don't want to be like those noble jackasses

Hiei was confused at this

Izuku:Don't get me wrong but I don't want to be like these damn nobles competing in rating games looking down on others thats not me if I decide to get my own peerage I will have to be strong for them after all no one wants to follow a weak king I want to rank up my own way

Hiei:I see well then get some rest because tomorrow you will start training hard and I am not yusuke I am gonna throw you into the fire so get ready to get burned

Izuku:Yes sir

Unknown to them mukuro was watching this with a smile

Mukuro:(Thinking)Hiei don't worry I will help you make that boy stronger so he can stand against anyone even though he does not bare my blood izuku is my son just like enju is our daughter

Chapter 6:The End  

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