3rd person POV:

Three years have passed since (Y/n) and Ciri moved in together.

The years they spent together were happy ones.

The sins and Orcan were skeptical about the relationship at first, but they were also skeptical about Arthur and Lucifer's relationship.

Ciri's companions had often get-togethers. Since (Y/n) and Ciri's house was a little too small, they expanded it so they had more room for the guests.

The two's relationship only grew with time.

Currently, (Y/n) and Ciri were greeting their guest.

Opening their door, they see Ashann, Ferra, Baron, and his two children Vex and Vax.

Ciri: Hey everyone!

Ferra: Ciri!

Ferra hugs Ciri.

Ashann: It good to see you.

Baron: How have you two been getting along.

(Y/n): Neither one of us is dead, so... Good, I think.

Baron: Oh, I hope you don't mind that I brought my kids along.

Vex/Vax: Uncle!

(Y/n): Oh, god no...

The twins, lunge towards (Y/n), latching on to him by his clothes.

(Y/n): Children...

Vex: Did you miss us, uncle?

(Y/n): No, and stop calling me uncle!

Vax: Why?

(Y/n): Because I'm not your uncle!

Vax/Vex:... Pfffft, yes you are.

Vax: Silly uncle.

Vex: Did you get us anything?

(Y/n): Yes, it's down in the pits of hell, shall I throw you in?

Vex:(giggles) Your so funny uncle.

(Y/n): And you two are disgusting little creatures. Now get off!

Vex/Vax: Nah...

(Y/n): Baron, get your children off of me!

(Y/n): Baron?

Looking around he saw the four enter the kitchen.

(Y/n): Don't leave me with them!

(Y/n), thinking quickly, grabbed a nearby banana.

(Y/n): Look potassium!

He throws the banana

(Y/n): Fetch.

The children giggle and go after the banana, allowing the ex-Demon lord to escape into the kitchen where the heroes were catching up.

(Y/n): Don't leave me with those disgusting creatures. What are they called?

Ciri: Children.

(Y/n): Children... They're disgusting.

Baron: Weren't you one, once?

(Y/n): I was. It was horrible.

Ciri: Well you have nine months to get used to them.

Ashann: That's oddly specific...

Ferra: Why nine months?

With the biggest grin on her face, she reaches out for (Y/n), wanting him to get close.

(Y/n): What? Do you want a banana?

Ciri: Get over here, dipshit!

Walking over to her, he stands by her side, as she held his hand.

Ciri: There's something we wanted to tell you all.

(Y/n): You're all fired.

Ciri: (Y/n)...

(Y/n): Kidding... But you all are on thin ice.

Ciri: We're pregnant.

(Y/n): No. You're pregnant, I'm just the cause of it.

Ferra: Congratulations!

Baron: I'm happy for you.

Ashann: Congratulations. I'm not a fan of the father, but so be it.

(Y/n): I will get Orcan to ground you, missy.

Ciri: Thank you, everyone.

(Y/n): To be honest, I'm surprised it took this long.

Ciri: Yeah, we were extremely lucky. I was worried we'd be expecting on month 1 of me moving in.

(Y/n): I know, right? We like... Did it a lot.

Ciri: Yeah...

Ashann: We don't need details on your sex life.

Ferra: Says you. I demand a full reenactment of the events! If possible, audience participation as well.

Vex and Vax then ran into the room with the banana, while chanting "uncle".

Vax/Vex: Uncle uncle uncle uncle uncle uncle uncle uncle!

(Glass shattering)

(Y/n) jumped through the window to escape the children.

Ciri: What the hell, (Y/n)!?

(Y/n): I'll fix it later!

He dashes off.

(TIMESKIP)

Arriving at an open field, (Y/n) falls to the ground and rests.

(Y/n): Ugh...

(Y/n):(mind) What the hell...

(Y/n): I'm going to be a dad...

(Y/n)?: Congratulations.

(Y/n): Thank-

(Y/n):!?

Looking towards where the voice came from, he found a man that looked identical to himself and wielded Exceed.

(Y/n): Who are you and how are you almost as handsome as me?

(Y/n)?: Have you forgotten your past, Mister angel emperor?

(Y/n):... Demon lord.

Demon lord: In the flesh.

(Y/n): How?

Demon lord: As I floated outside the universe, I found this sword. And now, after all this time, I'm here, in front of... Me.

(Y/n): Why?

Demon lord: So we can continue our fight.

(Y/n): Ugh... I have no interest in fighting. I'm retired.

Demon lord: Oh, In that case, I'll just leave.

(Y/n): Really?

Demon lord: Yes. And when our child is born, I hope you're okay with me raising him.

(Y/n): I'm clearly the superior version.

Demon lord: Put your money where your mouth is, and fight me!

(Y/n):... One attack. Everything you got. No weapons.

He tosses Exceed to the side.

Demon lord: Fine by me.

(Y/n): I'll finally put a rest to my past...

He transformed into his Angel Emperor form.

Demon lord: You can never escape, me! For we are the same!

He transformed into his Demon Lord form.

The two charged up their magic power, channeling it throughout their bodies.

The high source of power emitting from them was felt by the sins, Orcan, and any other nearby magic-user.

In a flash, they appeared in front of each other and went to punch each other.

History repeated, as their fists repelled each other, while strange energy began coagulating in between their fist.

The two with all their strength pushed until their fist made contact while crushing the super-condensed energy sphere in between their fist.

When their fists collided, they instantly become engulfed in a 10-meter radius sphere that looked like the night sky.

The sphere collapsed as soon as it was formed, leaving nothing but a crater where the two (Y/n) laid there, almost dead, and a glowing sparkling object that floated over the ground in the middle of it all.

(Y/n): That was a Bad Idea...

Demon lord: Fhdhjhsshjjutdf...

(Y/n): Huh...?

Looking at his past self, he saw him with half of his skull missing.

(Y/n): Uuuuuhhhhhh... Walk it off?

He begins to notice how he's being pulled in towards the shining object, along with seeing how space around him seems to be cracking.

(Y/n): Figures that I would be the reason I die.

With his body not moving, all he could do is watch as he and his past self was being pulled in.

Suddenly, he sees someone landing near him, who strangely looked like him.

This guy held out his hand and Exceed flew towards him. Grabbing the sword he rushes towards the sparkling object in the middle.

Using Exceed to cut open a hole, in reality, the young man then grabs the sparkling object, with all the might he could muster, he threw it into the hole in reality.

As (Y/n)'s body healed enough to move, he struggled to get up.

(Y/n): Who... Who Are you?

???:(smiles) I'm the future.

Another hole in reality opens. (Y/n) then sees a figure in the hole.

The young man jumps into the hole with Exceed. When it closed, the sins, the heroes, Orcan, and Dumbass the horse arrived.

Ciri: (Y/n)! What happened.

(Y/n): I don't know...

(Y/n): I want apple juice...

After that day. The Demon lord lost basically all his memories and was put in the care of the sins and Orcan.

Ciri and (Y/n) went on to have two children. A girl named Lucy and a boy named Arthur.

It took (Y/n) almost 20 years to find out what happened that day.

In the end, it didn't matter.

He had more than what he wanted. A family... Apple juice... But most importantly, he was finally retired.

                    THE END.....