*Midnight, Saori and Kazu were training in the forest, while Scarlet was eating a cherry parfait. Azure were playing with her baby, Breeze were looking them, and M were reading*

Midnight: Come on! This is all of your power in human form?! What a dissapointment!

Saori: Oh, yeah?! Sync with me, bro!

Kazuya: Got it, sis!

Saori: Thunder Style: Lightning Plasma! *shoots a lot of electric bombs*

Kazuya: Ice Style: Aurora Execution! *shoots an cold wind cannon*

*...*

Breeze: Look, Az! He mastered our Jutsu!

Azure: Yeah! I'm proud of him!

Breeze: He inherited the power of his mother.

Azure: And the will of his aun-

Breeze: *coughs*

Azure: I mean, his wife.

*...*

*Midnight recieved the attack, but nothing happened to him*

Saori and Kazu: What?!

M (in the distance): Watch out...

Scarlet: If you touch my cherry parfait, I'll put Yamato in your a*s!

*Midnight took off the ice dust in his arms and chest*

Midnight: If you want to make true damage, you have to do this...

*He started to focus Light energy in his arms. The clouds covered the sky*

Kazu: Huh?

Saori: WATCH OUT!

Midnight: Light Style: Stardust Revolution! *a lot of light arrows falled from the sky and went to them*

Saori and Kazu: *avoided all the arrows*

*...*

Scarlet *running and recieving some arrows while protects his parfait*: Ow! N-NO! S-STOP! OW!

M: *summons Nightmare and uses it like a shield to protect Azure and Breeze*

*Suddenly, some arrows attacked the twins*

Saori: GWOOOH!!

Kazu: G-GAH...!

*Midnight stopped his jutsu*

Saori and Kazu: *pant* *pant*

M: *deactivates Nightmare* Phew.

Azure: Thanks, M.

Breeze: Even if you're skinny, you have skills.

M: -_-

Scarlet *with some arrows stabbed in his body*: I-I'M FINE, AND MY PARFAIT TOO!

Midnight: ... This training session has ended.

Saori: Y-You're strong... daddy...

Kazu *sits in the grass*: I can't... keep a good fight... even with Saori on my side...

*A portal has been opened, and then, a hand took Midnight and all his family*

*In another dimension...*

Midnight: W-Where are we...?

Breeze: WATCH OUT, MIDNIGHT!

*A meteor were falling in the sky, but the white haired devil cutted it with Yamato*

Saori: Where are we?!

Kazu: ... I don't know...

Scarlet: This sensation... MIDNIGHT!

Midnight: ... We're in the Underworld. Breeze! Take Yamato and run away with Azure, Raiden and M! *throws the katana to his wife*

Breeze: *catches it Yamato* M! Take Raiden and go out! *opens a portal*

M *with Raiden in his arms*: Okay... *escapes*

Midnight: THAT WASN'T PART OF THE PLAN! >:v

Breeze: Come on, I wanna have fun in the fights too.

*Suddenly, a giant devil appeared. He had angel wings, three eyes, a long hair and beard, and a greek toga. Mundus, has returned*

Midnight: ... MUNDUS.

Breeze: No way...

Azure: He has returned.

Scarlet: DANG IT! WE HAVE TO FIGHT HIM AGAIN!

Saori: Wait a minute... you know him?

Kazuya: Yeah, seriously...

Midnight: He's Mundus, the Lord of the Underworld.

Breeze: Your father beated him 23 years ago, with our help... and with Sparda's power.

Mundus: Well, well. It's Vergil, the Darkslayer... *looks the twins* Oh... it seems you got 2 sons in your entire life.

Midnight: I hope you're ready to DIE.

Mundus: Don't steal my sentences, SCU*M! *throws a lot of dark energy spikes*

*Saori and Kazu deflected all of them*

Midnight: Okay, guys... are you ready?

Everyone: Yes!

*Some minutes later, Mundus defeated them. No one, with his SDT could defeat him. However, Mundus it was already in his knees*

Mundus: *pant* ... *pant* ... How pathetic. You couldn't defeat me... Now it's too late... YOU'LL GONNA DIE RIGHT NO-! Huh?

*Midnight stood up, hardly*

Mundus: Pathetic ant. PREPARE TO BE SQUASHED! *created a giant meteor*

*A dark purple aura were flowing in Midnight's body, while he had his eyes closed*

Saori *in the floor*: D-Dad...?

Kazu *in the floor too*: W-What's that... energy...?

Scarlet: What is... going on?

Breeze: *unconscious*

Azure: *unconscious too*

*...*

Mundus: NOW DIE WITH THE UNDERWORLD! *throws the meteor*

*In that instant, Midnight destroyed in one second the meteor with his bare hands*

Mundus: What?!

Midnight *with a demonic voice*: ... I HAD ENOUGH OF YOU.

https://www.youtube.com/watch?v=U2CJD734z5E

Mundus: What the hell is that?

*Midnight opened his eyes, and his eyes were black with red pupils*

Mundus: What it's going on? He's different... He changed.

Saori: Daddy...? *coughs*

*Mid looks Saori*

Midnight: I'm not your father.

Saori: ... wait a second... that infinite power... those red eyes...

Kazu: That pure darkness...

Mundus: I understand it... You're not Vergil anymore... YOU'RE SPARDA.

Saori, Kazu and Scarlet: SPARDA?!

Breeze *wokes up*: You mean... Midnight's been possessed by his father now...?

*Sparda looks Breeze*

Sparda *in Mid's body*: You're Vergil's wife...

Breeze: Yeah... Mr. Sparda.

Sparda *looks the twins*: And you 2 are my grandchildren... nice to meet you 2...

Saori: Grandpa Sparda...?

Kazu: Am I dreaming...?

Mundus: How pathetic. You're using the body of your own son, Sparda!

Sparda: MUNDUS... YOU'RE GOING TO DIE.

Mundus: Hm?

Sparda: I won't let you hurt the family of my son or any innocent people anymore.

Mundus: What are you talking about?! I kill when I want! THE WEAK DIES AND THE STRONG SURVIVES!

Sparda *with his Devil Trigger*: All right then... Let's play with your rules, Mundus! *creates an Devil Sword Sparda* LET'S GO!!!

*A powerful shake moved everything. Mundus were pushed into the air, while Sparda started to cut him*

Mundus: NO!! I WON'T LET YOU KILL ME!

Sparda: THIS IS THE TIME OF MY REVENGE TO YOU, MONSTER! DIE!!!

*Sparda made a giant cut and killed Mundus*

*Everyone were shaking, while Sparda went to them and deactivated his DT*

Sparda: Huh, that was easy.

Everyone's faces: -_-

Sparda: You 2 *looks Saori and Kazu*

Saori and Kazu: Huh?

*Sparda cured everyone and he went to his grandchildren*

Kazu: Grandpa?

Sparda: ... *smirks and smiles*

Saori: Huh?

*The pure devil layed his hands in the head of his grandchildren, giving them a bit of his energy*

Saori: I'm feeling... more stronger than before...

Kazu: Me too...

Sparda: Kids, if your father passes away... the fate of the Sparda's family will be in your hands... so please... make your grandpa proud of you 2... like I am already with my son... Vergil *winks an eye*

Saori: ... We will meet you again, grandpa?

Sparda: Of course, dear...

Kazu: ... can we give you a last hug...?

*Sparda nodded and both twins hugged him, while the energy of the pure devil leaved Midnight's body*

Midnight: ... hm?

Breeze: Midnight?

Midnight: Yeah...

Saori: So... the grandpa had possessed your body, isn't it?

Midnight: That's right... I've talked to him while he was inside of me...

Kazu: What did he told you...?

*Midnight looked to the demonic sky, while he smiled and cried a bit*

"Inside of Mid's head"

Midnight: Dad?

Sparda: We have our own space for a while, son...

Midnight: ... Why did you've saved me?

Sparda: You remember when Mundus attacked us the first time, and he killed me?

Midnight: ... *nods*

Sparda: You've absorved my energy, and my soul and power it's inside of you... so, if you need some advices from your old man... tell it to me *winks an eye*

Midnight: ...

Sparda: Now... let me tell you something before I go... *starts to walk to Midnight while Sparda disintegrates*

Midnight: ...

Sparda *hugs him*: I'm proud of you, Vergil.

Midnight: *cries* Father...

The end.