Dominic walks in one morning going through the mail he had received

Dominic: Junk..junk...not me..a..what the hell?

Dominic holds up a red letter with no name to who it is addressed to nor where it came from 

Dominic: Uhh..

Koro: Hey did something come for me?

Dominic: I don't know? Were you expecting a red letter?

Koro: Ooh~ Gimmy~!!

Koro grabs the letter and opens it with his nail and skims through the letter before crumpling it up and throwing it away

Koro: YEET!!

Dominic: Uhh..what was that?

Koro: Yeet? Oh it's something you-

Dominic: THE LETTER!!!

Koro: Oh..yeah it's just to Rias' birthday. She's turning..mmmm...23.

Dominic: Well aren't you going to go? You were in a relationship with her once.

Koro: Sorry but I'm banned from their home. If I step one foot in their territory I get shocked in the balls. That's how bad it is..

Dominic: Yikes..

Koro: Ah! Hey you can go instead!!

Dominic: Oh no no I don't think I should go to a party

Hestia/Sarah: PARTY!?

Hestia and Sarah hug Dominic's legs pleading to go to the party

Dominic:*turns red* FINE!! Just..GO GET CHANGED!!

Hestia/Sarah: YAY~!!!

They both kiss him on the cheeks and run to their rooms to change 

Koro: Wooh~ My man might get some pus-

Dominic:*pulls out a rosario* THE POWER JESUS COMPELS YOU HEATHEN!!!

Koro:*hides his face* WRRYYYY!!!

Dominic: THE POWER OF JESUS COMPELS YOU!!!

Koro: WRRYYYYYY!!!

Dominic:*pulls out a bible* READ BITCH!! READ!!!

Koro: AAAAAHHH!!!

The two then burst out laughing 

Koro: HAHAHA!! OH MY GOD MAN YOU ARE KILLING ME!!

Dominic: HAHAHA! FURTHEST I'VE GOTTEN HUH?

Koro: Hey how much was that bible?

Dominic: It's just a cover! I put it over my Fifty Shades book

Koro: Ooh~ Kinky~

Dominic: Hey I have my quirks

Koro: Does that include being a closet pervert?

Dominic: Yes it does my friend. Yes it does.

~timeskip~

Hestia:*comes out in a dress* How do I look?

Dominic:*puts two thumbs up with no expression*

Sarah:*comes out* What about me daddy?

Dominic:*does the same but with a small smile*

Hestia*fake cries* WAAAH~!! You like her more~!!

Sarah: AAH! Don't cry mommy! We're both daddy's favorites!

Dominic: Can we just go?

Hestia: Wait where's your outfit?

Dominic:*puts on a monocle* Bam.....

Hestia: That's just a monocle!! How can you go to a party wearing the same thing every day!?

Dominic: I don't like making decisions on my clothing...

Sarah: Hey daddy, how are we going to get down there? 

Dominic: Not to fret I have my ways!

Dominic pulls out Yamato and slices open a portal

Dominic: It's safe, trust me.

Dominic walks through the portal and the two girls shrugged and walked through and they appeared at the front gates of a giant mansion

Hestia: Whoa..!! It's huge!!

Dominic: Yes. Now come on let's go.

They walk through the gates and when they reach the front door they are greeted by a servant

Servant: Name..

Dominic: Uh Dominic and my plus 1 and 2

Servant:*sighs* Who is your family..?

Dominic: Oh..ahem. I am the eldest son of Sparda!

Servant: Yeah right..your hair isn't the right color and those eyes are obviously contacts. Go away you riff raff!

Dominic: .......

Servant: Well..?

~at the party~

Various houses were at the party for Rias Gremory's 23rd birthday party

Rias:*sighs*

Akeno: What's wrong Rias?

Rias: I don't know..I feel..bored. Is that the word? I'm bored Akeno. I don't know why. All of my friends and family are here but something is missing..

Just then, a bunch of guards were blown into the room along with the doors being destroyed

Koneko: That..?

Sirzechs: What is the meaning of this!?

Dominic walks in with Hestia and Sarah and he looks around

Dominic: They said I was a fraud. So I showed them I'm the real deal.

Rizer: Excuse me but who the hell are you?

Dominic: Dominic Sparda. Eldest son of Sparda.

Sirzechs: Listen young man. I don't know who you think you are but no one has seen him since after the war! Now tell us who you really are and then leave!

Rias: Brother...*sighs* Why are you here?

Dominic: Alucard didn't want to come..

Rias:*sighs* Typical...that boy..

Dominic goes up to Rias and kneels down in front of her and takes her hand

Dominic: Happy Birthday my dear. I don't have a gift since we just got the letter but I can grant you one request. That's all I can offer.

Rias:*smiles* I will make sure to keep that in mind..

Rias then spots Hestia and then her eyes go to Sarah who smiles and waves at her

Rias:*wide eyes* ......

Her eyes dart back and forth from Hestia, to Dominic, then to Sarah

Rias:*snaps her fingers*

Rias Peerage:*slide into frame* Yes president?

Rias:*points at Dominic then to an open door*

Rias Peerage: Hai!

The entire peerage grabs a hold of Dominic and carry him to the room

Asia:*comes back* Um..s-sorry but we need to borrow your..boyfriend for a bit!

Asia runs away covering her blushing face

Xenovia:*turns on a light* Will we be making babies in here?

Dominic: Oh my god hi Xeno~!

Xenovia: Hello Dominic. Are you prepared to make babies with me yet?

Dominic: Hehe no~ One day though..

Rias:*grabs him by the shoulders* Dominic...how...can you....

Dominic: Uhh...

Rias looked at him with a red face and tears flowing from her eyes

Rias: HOW CAN YOU MAKE SOMETHING SO ADORABLE AND NOT TELL US!!?

Dominic: .....whuh..?

Rias: HOW COME YOU MADE SUCH A CUTE LITTLE BALL OF LOVE!?

Dominic: Sarah!? She-she's not my biological daughter!!

Rias: WHAT!? But she looks so much like you!

Dominic: So does Weiss Schnee but she's not my sister!!

Rias: Oh..that's right..then what about Hestia? Have you and her-

Dominic: No. I still do not forgive her for what she did to me. I cannot allow that.

Akeno: Aww~ Does someone need a hug~

Akeno grabs Dominic's head and places it in her breasts

Dominic:*muffled* You know..I kind of missed this..

Akeno: Ara ara~ I can do more with you. If these girls just leave..you and I can-

Koneko: You do realize you're holding onto a doll right?

Akeno: AH-

Dominic Doll: Power.....power.....power.....power....power...

Dominic: Phew..~ I made it out..

Hestia: Heeeey!!

Dominic:*sighs* I'm going back in..

Sarah dragged Dominic to their table where Hestia was drinking her second bottle of demonic wine and Sarah's face was dirty from the food she was eating but none of it got on her dress

Sarah: Garrr~~! I'm a scary monster daddy~!

Dominic:*chuckles* Yes indeed you are..

Hestia: *hic* So Dom...*hic* does the..the carpet...match the...drapes?

Dominic: .....*face goes red*.....

Hestia: Well!?

Akeno:*puts her arms around Dom's neck* Yes~ Is there a white mane for my lion~

Dominic: W-well I don't think this is appropriate since kids are here and this is a day all to Rias

Rias: I am actually curious as well.

Dominic:~BITCH!!~ Look...fine yes! 

Akeno: Can I see~

Dominic: How bout no!? Look I'm going outside and don't follow me or..I'll kill you or something yadda yadda..

Dominic walks outside and pulls out a cigarette and lights it with a small flame from his finger

Dominic: Ah..~ Goes down smooth~

???: I didn't know you smoked

Dominic was shocked by the voice that he inhaled the cigarette

Dominic: G-OH MY GOD!

???: I'm so sorry!!

Dominic:*coughs* It's fine..I'll be alright. Who are you?

???: I am Velena Gremory. Rias Gremory's mother..

Dominic: Oh!*bows* My lady!

Velena:*giggles* It's me who should be bowing to you oh mighty son of Sparda.

Dominic: At least someone knows me..

Velena: How come you are outside and not in the house enjoying the party?

Dominic: Your daughters friend Akeno wants to ride me like a horse..

Velena: Huh...?

Dominic: Sex..she was asking about my pubic hair and if she could see it! Kids are so weird!!

Velena:*giggles* You're near the same age as my daughter yet you speak as if you are decades older.

Dominic: I see myself as more mature than most people. And better looking if I do say so myself~

Velena:*walks up to him* I can see that~

Velena cups his cheeks and kisses him

Dominic:~AAAAAAAAAAAAAAHHH!!!!~ MMMMMMMMM~

Velena:*licks her lips* I like you~ Can you...follow me to somewhere~? 

Dominic:~Do something me!!~*nods*~Me you horny fuck!!~

Velena takes Dominic through the castle, hiding from servants and other guests until they get to a room and she opens the door and brings him in

Dominic: We...should really get back to the party Ms.Gremory

Velena: Please..call me Vel~

Dominic: Okay look..Vel. Your daughter is having a party and also you're married. So..let's not do anything drastic.

Velena: When does one get to spend the night with the mighty Sparda~

Velena shoves Dominic onto the bed and crawls onto his lap and straddles him

Velena:*smiles* Let's fuck like animals~

~timeskip~

Dominic sat down at the table with his hair messed up and with wide eyes like he just experienced a horrific sight

Hestia: Hey what's up? You have a flashback?

Dominic:*takes a bottle and chugs the entire thing*

Hestia: Damn kid slow down!!

Dominic: I did a whoopsie...

Hestia: What? You spilled something on the carpet?

Dominic:*shakes his head* Way worse....

Hestia:*gasps* You didn't..

Dominic:*nods*

Hestia: HAHAHAHAHA!!!*pounds on the table laughing* OH MY GOD YES!! HAHAHA!!

Dominic: ........

Hestia:*wipes her tears* Okay okay..hehe..so who was it?

Dominic:*holding his head* Velena...

Hestia: Wh....oh my god no wonder you're scared shitless. Look we can leave if you want to.

Dominic:*nods* Please..

Hestia: Okay but what if they ask for you?

Dominic: Kage Bunshin No Jutsu!

A perfect clone of Dominic appeared in the other seat and waved

Dominic: Stay here and when the party ends you disappear. Understood?

Clone:*salutes* Yes sir!

Dominic: Good. Let's leave..

A red portal appeared in the middle of the room and red bat demons flew out of it and then cybernetic demons came out as well

Clone:*poofs*

Dominic: Coward!!

Hestia: Ah! What do we do!?

Dominic: Get Sarah and hide!!

Hestia: What about you!?

Dominic: I'm going to show these fools why they should know to fear the power of Sparda..

Dominic adjusts his gloves and walks to the portal

Dominic: This may be fun...

https://youtu.be/4RR2Y8SlOAM

Dominic: Kaaaaaah~

Dominic punches and kicks the bat demons that approached him with a warm yellow energy radiating from him and when he comes in contact with the demons they are burned to ashes

Dominic: Now let's see if you can dodge this!! Clacker Boomerang!!

Dominic pulls out metal balls on strings and throws them and they fly around the room, killing demons on contact and they come back to him like a boomerang

Dominic: Heh..come on!

Dominic points his hand at demons wearing jet boosters and his summoned swords impale them or disembowel them

Sirzechs:*slashes a demon behind Dom*

Dominic: Much obliged!

Sirzechs: You helping us out of your own fruition! I must say son of Sparda, we thought you were unworthy of that name but now we see you are worthy to have it!

Dominic: Thank you! Watch this! 

Dominic punches and kicks a large demon but they seem to have no effect on it and it just laughs at him

Dominic: Here's the finally!

Dominic does a one inch punch on the demon and it explodes

Dominic: Sendo Hamon Overdrive!

Sirzechs: Impressive!

Dominic: Hmph. They are ruining my friends party. Time to die..

Dominic summons Yamato to his hand and he charges his energy

Dominic: Let's do this...

Demons with swords for arms come out of the portal and roar at Dominic

Dominic: Come on!!

Dominic and the demons fight around the room at high speeds and one by one the demons fall to Yamato

Dominic: Too easy...

A large hand smacks Dominic away and he skids across the floor and sends swords at the demon but its armor was too thick to penetrate it

Dominic: Cyberdemon...

Sirzechs: What? I never heard of this kind of demonic thrall before

Dominic: Hell is its own dimension Sirzechs. You are just one of infinitely many. 

The cyberdemon roars and charges a blast from its arm cannon and fires it at Sirzechs and Dominic

Sirzechs: Get down!!

Dominic:*runs a hand through his hair* HMPH!!*devil triggers*

Dominic slices the blast and it dispersed and he charges at the cyberdemon

Dominic/Demon: HAAAAAA!!! BEGONE!!

Dominic disappears and slash marks appear confusing people who never seen this technique before

Dominic/Demon: You shall...die..

The demon explodes and Dominic turns human and dusts himself off

Dominic: Scum..

A lamp falls on a random demon

Voice: SSSmokin'

Dominic: YES!

~timeskip~

Dominic: Hey sorry about your house Rias.

Rias: Do not worry, I'm sure we can find a place to stay while it is fixed.

Dominic: Why don't your crazy fast magicians fix it?

Rias: Most of them are dead....

Dominic: Right...uh well..happy birthday.

Velena/Akeno: Oh Dommy kun~

Dominic:*pushing Hestia and Sarah* RUN! RUN NOW!

Sarah: Why they look like they want to ask you something

Dominic: Take something is more like it!!

Dominic pushes Hestia and Sarah all across hell until they make it home and they all go to bed and Dominic doesn't wake up until 7:30 feeling very heavy in his chest area

Dominic:*groans*

Akeno: Having trouble dear~

Dominic: No dear I'm just tired is all...

Akeno: Well go back to sleep. The kids can make themselves something to eat~

Dominic: Mmmm yeah...love you..

Dominic turns over and smiles but his eyes then open and he turns back around and sees Akeno naked under his covers

Akeno: Hello~

Dominic: AAAAAAAAHH!!!