(Unknown Future)

????: father please!!

????: forgive me, my son.

????: father, you're going to use everything to kill him!?

????: yes, even though I'll die, I'll still be with you. I'll send back when I was 18 and he'll take care of you. Please take care of your sister, your caretaker will join you. You're my only family in this future. There will be robots that their technology is beyond the past's technology. They'll help him. But he'll going through the same pain as I did...I hope he won't be fallen...

He opens a portal as his daughter and son cried.

Daughter: papa!! Please don't die!!

????: I'm sorry, but I had to make a risk goodbye my children.

Then the caretaker teared up.

????: thank you for creating me and have myself understand emotions and humanity's potential.

The portal sucked them to the past as the father looks up to a demon that is a false god.

False God you dare do this!?

????: yeah, you came back fusing a demon and a "god". You're a false god, a enemy of a true god.

He transforms into a unknown form as he combines all of his powers into one.

????: I'LL MAKE SURE YOU'LL NEVER EXISIT AS THE YOUNGER ME WILL DEFEAT YOUR UNFUSED SELVES!!

He summons a blade filled with pure raw energy as his familiars appeared.

????: ready?

????: yeah even in death I still love you.

(Present)
It was been three weeks since the death of Y/n, Nero, Ren's family. Nero gotten more aggressive as she slathered many demons who works for Mundus's son. Ren was barely the same but killing many shadows if they also worked for Yaldabaoth which shocked her that Yaldabaoth is now reborn as the son of the prince of darkness. Jeanne, her Alter Counter part, Mashu and Saber joined Aura academy to make sure Y/n is safe, luckily the weapons were secured but when they return to get them the bodies were never found. Y/n passed out due to his demonic leakage, luckily Asia heals him during those three weeks in his dorm.

(Y/n's Mind)

Y/n:*groans* my head....what?

Y/n: my mother and aunt Vergil's old home, but was it burned down?

????: no this is your inner world Y/n.

He turns around to see 6 men standing as he felt huge amount of power coming from them.

Y/n: who are you people?

Ichigo: i'm Ichigo Kurosaki i'm your humanity side even thought i carry Soul reaper, quincy and hollow powers.

Zangetsu: i'm zangetsu your hollow, soul reaper and Quincy side, good to see you king.

Shirogane: I'm Shirogane your angel side, your heart has been damaged greatly my lord.

Goku: the names Goku a saiyan raised on Earth.

Vegeta: Vegeta prince of all saiyans and we're your Ki/God Ki/Saiyan side.

Lucifer: I'm Lucifer Morningstar, the king if hell and Brightest of All God's Angels and I'm your demonic side. There another version if me who will join your harem since her love of pancakes.

Y/n: so you're my power sources?

Ichigo: yes but you carry a sacred gear.

Y/n: is that gauntlet that Issei carries?

Zangetsu: correct but you carry a powerful one, one that many feared awaken Hallowed Father.

Y/n: wait what!?

Dragon:*rawrs*!!

Y/n: who are you!?

Bahamut: I'm Bahamut and i go by many names the Dragon King, the Hallowed Father, the First Sire.

Y/n: your power is beyond of a god!!

Bahamut: yes but as i was sealed in sacred gear and you as my welder.

Y/n: so my family knew about this!?

Bahamut: they've gotten hints about it but sadly you saw their deaths at the hand of Yaldabaoth.

Y/n:....

Goku: that's were we'll be train you. But our time is limited since we have to return to our worlds to fight our enemies many times. Some might find a way to get to your world.

Y/n: really?!

Lucifer: yeah as in right now Yaldabaoth and Mundus are very powerful as sealing them won't work so both of them must be killed for good erasing them.*sigh* how many versions of my father is there!?

Y/n: too much I think? Multiverse crap.

Ichigo: you should wake up.

Y/n: see yea.

Then everything went white.

(Back to Dorm)

Y/n:*gasp*!!

Asia: Y/n!! You're okay!!

Y/n: yeah....i want to speak with Rias.

Asia: why?

Y/n: can you sense it?

Asia:*gasp* you actually have him, i'll get her!!

She rushes out as Ren and Nero walked in.

Nero: hey cousin....

Y/n: hey Nero and sis. Got any information?

Nero: no we didn't got any...

Ren: once i see that false god i will kill him!!

Y/n: we need to train first as fighting them now would be not just our deaths but everyone's death or them ruling the world.

Then Rias arrives with Archer.

Rias: so is it true?

Y/n: yeah i have Bahamut and I have Lucifer within my head.

Rias: i see....he's known for being powerful that even many dragons feared him. You also have the fallen angel within your mind this is scaring me.

Y/n: sorry.

Archer:....

Y/n: Archer are they not here?

Archer: no they're at home.

Y/n: so they still want my forgiveness?

Archer: yes.

Y/n:*sigh*

Then Sachi, one of Kirito's friends arrives with a bento box.

Sachi: hello ummm Y/n-senpai i made this for you!!

Y/n: oh a bento box?

Y/n: wow I'm shocked. It looks good let me try it.

He takes a bit, and he quickly eats it. He gave Sachi a head pat.

Y/n: thanks Sachi.

He takes out a green star, crushes it and he was healed up.

Y/n:*stretches out* much better, I'm going to walk now Sachi would you like to join? Oh and Rias would like to join?

Sachi: yes I would love too.

Rias: yeah I can do that for you.

Everyone left as Yami changes into his new clothes.

Y/n: much better come on girls.

They both nodded and they left the academy.

(Mini-Timeskip)

They arrived at a park. They all sat down on the grass and Sachi asked him.

Sachi: So who is Mundus?

Y/n: the prince of darkness, he battled my grandmother, Sparda. Who rebelled that devil and saw a new light, brought justice, helped the humanity by sealing them in hell along with herself, she was married to a human woman named Eva and she gave birth to two daughters which their names are Dante and Vergil, Dante was my mother but I've couldn't remember after that since they were dealing with demons for a long time so I had been adopted by the emiya family everything was great until I was framed for something I didn't do from a prank that Gilgamesh did.

Rias: Gilgamesh!?

Y/n: yes, my "brother" different timeline version. Why?

Rias: that dick nearly killed Kiba and assaulted Xenovia and Irina!!

Y/n:*mind*more reasons to kill that son of a bitch.

Lucifer:*telepathy* yes a new soul to be in my list.

Y/n: Almost everyone I known betrayed me and I was beaten down by prisoners until my demon side awaken, I never knew about this until I was around 15. I beaten up many prisoners, caused problems with the prison itself where I had move but caused more problems, killed four people with a spoon, many leaders of each country feared me and deemed me a devil and now here we are. Now he revived that false god and made him his son and killed my family.

Sachi and Rias hugged him as it was the first time that two girls who barely knew him were hugging him.

Y/n: I'm actually shocked.

Rias: wait why?

Y/n: two girls who barely knew me and fell bad for me.

Sachi: yes because the pain you've been through.

Rias: so much you've been through and I'm sorry about your family.

Then a portal opened as they got up.

Y/n: what the!?

The portal shot out people and closes. The tiro walked towards them and were confused.

Rias: who are them?

Sachi: not sure but I feel they're not enemies.

Y/n: I can feel my energy from them? Odd.

????: ow...

????: wait, father?

Y/n: father?

????: oh we're back in the past.

Rias: past? What do you meant by that?

The dust fades out, revealing them.

(This is a ticket for me to go to hell)

Y/n: why is she wearing like that!?

Rias:*taking notes*

Sachi: very lewd...

????: you created it master Y/n!!

Them: wait master!?

????: sorry I'm 2B, I was created by Master Y/n as one of the four bodyguards for the children and one of the four caretakers. Your first child is Asura Gremory, the second one/Last one is Yui Sparda. We're from the future timeline.

Yui: mama!!

She hugs Sachi which shocked them.

Sachi: I have a daughter?!

Asura: hey mother*hugs Rias*

Rias: I have a son!?

Yui and Asura: hello father...

Y/n: I have two kids!?

2B: actually many kids and wives also husbands.

Y/n: WHAT!?

2B: I'll give you a hint you're already dating them and one is from your family.

Y/n: Saber, Jeanne, Mashu and no it's my sister Ren!?

2B: yes...

Rias: what happened to them including our future counter-parts.

Asura: that bastard Mundus and Yaldabaoth fused to become a new "god" he killed Saber, Jeanne, Mashu, Ren and Nero I think it's a but blurry.

2B: stabbed them through their chests or that's what we thought.

Y/n:!!

Asura: I can hear you crying begging and yelling in rage that you want to kill those two.

Y/n: I don't believe it....I need some rest.

Rias: yeah it's giving me a headache.

Sachi: we should return our friends are worried.

Y/n: but what about the kids and 2B's clothing problem!?

2B: well your future gave me a school uniform so we're good.

Rias: we should tell this to the headmasters.

????: you remind me of Dante.

Y/n: okay how many people knowns my mom!?

????: sorry let us show you who were are.

Y/n: I can tell you summon demons.

Demi-Fiend: you're Y/n, what happened to Dante?

Y/n: killed from Yaldabaoth.

Demi-Fiend: another fake god?

Kazuya(Smt 1): well we want to join the academy.

Sachi: why?

Nahobino: since you need backup we'll help you.

Flynn(Smt 4): as we make sure YVHV does become a reality.

Nanashi(smt 4): it was painful.

Raidou: as for me it's a case that I can't do alone.

Alpeh(SMT 2): for me I want to take him down.

Y/n: so we got same goals.

Rias: can we go?

Y/n: yeah sure.

They teleported back to the academy and went to their own dorms while his future children, 2B and the devil summoners uses a dorm temporally.

Y/n:*mind* what the fuck is going on here!?

End of chapter