Giant of fates(Ultraman Z x Fire emblem fates)

Prolouge

After defeating Destrudos, Z and Haruki were celebrated that they finally defeated Destrudos and Celebros and at the same moment, Haruki confesses to Yoko and asks her to marry her and in return for saving her, Yoko gladly accept Haruki's confession. Fews months later, Z decided to leave Haruki behind, because he married Yoko, who is currently pregnant with his daughter inside of her.

Haruki: Z–san, are you really want to leaves?

Z: Yes, because I want you to be there with your child. You don't want the same experience as your father did.

Haruki: You right, Z-san. Well, it's great to battle with you, all this time.

Z: Yes, be sure to protect Yoko and your daughter with your burning heart!

Haruki: Yosh! Goodbye Z-san!

Z looks at Haruki one last time and fly to the sky and making a letter z in it. While Z on the way back to M78, he encounters a familiar enemy.

Z: You're...!?

?: Absolute Destruction!

A ball of energy went to Z and a sudden slash in front of him.

Z: Beliarok!?

Beliarok: It seems you a strong enemy, interesting, let cut him.

Z nodded at Beliarok before he says it.

Tartarus: I am the ultimate life form, Absolutian, Absolute Tartarus.

Z: Tartarus!? Wasn't you have been defeated by Master Zero!?

Tartarus: Defeated? I just merely escape them through my portal.

Z: Then I will defeat you no matter what! I won't let you harm any planet!

Z rush to Tartarus and tried to deliver some punch for him, but it was not successful to hit him and Tartarus hit Z on his back. Z uses Beliarok and tried to slash him, he manages to hit some of him but show no budge from Beliarok's attack.

Tartarus: Weak...

Beliarok: Deathsium Slash!

Tartarus was ultimately hurt by Beliarok's attack.

Tartarus: You're!?

When he looks closely at Beliarok and widen and saw Z in Delta rise claw form.

Z: I going to end you, once and for ALL!

Z rushes to him with extreme speed as he hugs Tartarus further away from the earth but at that same moment, Tartarus opens up a portal and which leads both of them into it.

~~~At Hoshido Plain~~~

Both kingdoms of Hoshido and Nohr are standing between the line of the Hoshido Plain where their sister, Corrin needs to choose a side of her family, but she chose neither side. She starts to talk with her adopted brother.

Corrin: I... I won't betray anyone. I won't fight against the people of Nohr after you cared for me all these years. You and Camilla. Leo and Elise... You might not be related by blood, but you are family to me. You've been with me for as long as I can remember.

The person on the horse is known as Xander, the high prince of the Kingdom of Nohr, and has a sword named Siegfried.

Xander: Well said, little princess. What ties us together is thicker than blood.