The demon lord meets the Goddess of Multiverse

In the middle of the night. There is a huge castle. Inside the castle, a single man is sitting on a throne facing the marching knights ready to kill him.

The captain marches right in front…

"Demon lord Lucifer! You've sinned mankind! You created pointless war and chaos that took millions of lives! We're here to make you pay the price of what you've done!"

"I think you're trying to be reckless here. I hope that you're aware that I've killed all of the gods in this world. If I make a move to exterminate you no one will be there to save you."

Well, none of that matters. Even if I erase human existence nothing will change. Most of my army have already been killed and the survivors I put into a deep slumber inside me including the 7 pillars of the demon kingdom.

I looked directly at the knights

From the look of the situation talking my way out of this won't work. They're ready to kill me without hesitation. I have the power to kill everyone but that is not my goal. I want the humans and demons to coexist with each other but those Goddamn Gods blow up my plans so I decided to kill them all. However, the result of my battle against the Gods created unnecessary war and took countless lives of demons and humankind. Well, I guess I have no choice.

I stood up and open my arms very wide.

"oi, you filthy humans! If you're going to kill me come and get me! I want to get this over with!"

The knights rushed towards me and stabbed me with all of their pent-up frustration and hatred towards me.

My soul separated from my body and saw my body falls to the ground.

The knights rejoice as I die.

Well, it's a bit out of hand and I'm tired of this era. I'll just see it in my next reincarnation. I wonder how humans will change now that their Gods are gone. See you in the next era.

Well, I'm going to welcome my next new life in the next era and fall into a deep slumber for a while.

Reborn…

A woman's voice can be heard saying "Look our baby is waking up honey."

A man's voice can be heard saying "Let me have a look."

Damn it! They're so annoying. Why won't they shut up?

I look around and I saw a lot of things that I'm not familiar with what is this thing at my nose? Get it off me!

"Son don't remove this thing. It will help you breathe well. You just came back to life."

Goddamn it, you filthy human how dare you to tell me what to do!

I shot him with a bit of my power that throws him away. I guess I was a bit overboard.

"What happened to my husband?" While curious the man stands up.

"I don't know what is going on but it kind of feels like something hard shoved me away by force. Anyhow, our son is in a rebellious phase. He wanted to remove the oxygen mask on his face."

"Probably he's hungry and needs a breastfeeding."

What is this woman is talking about? Breastfeeding? What is that?

The woman pulled her boobs out and said, "alright my baby. You can drink a lot of my milk to satisfy your hunger."

These two filthy humans are getting on my nerves. That's it I'm going to talk some sense with these two bastards.

Lucifer breaks his silence and said, "oi, how long are the both of you going to piss me off?!"

The 2 of them were surprised and said, "our baby can talk?!!'

Lucifer floats in the mid-air and said, "you guys are getting on my nerves a lot."

The man stood up right in front of Lucifer holding a steel bar and said, "get away from my wife you filthy demon!"

"Oh, so you're aware I'm a demon and you bravely stood up right in front of me. You have guts, at my past life, no humans will stand up against me alone. You're the first one that I've met like that." maybe I should show some tricks that will make them stop messing with me.

The steel bar melts like nothing as a result the two couples pass out of shock.

Well, that was surprising. Humans are afraid of such low tricks like that? In my past life, humans will be more aggressive in killing me. If you just show a slight sign of you being a demon. You'll be dead the moment you stay longer right in front of them.

Well, that's already in the past. Anyway, does this creature that's been watching me from the back is not going to make a move? Does it think I can't sense him?

"oi, are you just going to stand there and watch or what?"

…

No response? I guess I have to do it myself.

Lucifer changes into his former look which has silver and short hair. He has red eyes and he wears a black robe.

Lucifer punch through the mid-air and a black hole appeared out of it.

He one-handedly pulled a person out of it while twisting its neck.

"oi, you filthy woman, how long are you going to stay quiet? Do you want me to kill you?!'

Lucifer looks closer at the woman and noticed something.

Wait, this is an aura of a God, right? I thought I'd already wiped all of them out of existence. Is there a survivor from that massacre? Well, I'll just kill her.

His right hand turned into a sword and aim it toward the girl's neck.

Wait, this demon lord is really going to kill me. I need to speak up if I want to survive.

"wait! Let's talk first!"

Lucifer was about to slash her but he stopped and said, "I don't waste my time talking to Gods."

"I'm not one of those Gods that you hated a lot and I'm not from this world either. In other words, I'm not a God of this world."

Lucifer's hands turn back to normal and let her go.

"oh, you're saying you're from another world? Who are you and why are you spying on me? If your answer didn't satisfy me ill kill you so you better give me a clear answer."

"Alright, introduction first. My name is Seraph and I'm the Goddess that rules all over the multiverse. I came here to ask for your help."

Lucifer got annoyed and said, "you're the Goddess of the Multiverse then go solve your own problems."

Seraph got worried and said, "but I can't handle this problem on my own and this problem is your problem as well!"

"Huh? How was that my problem?"

While the 2 of them are talking the security personnel came and said, "who are you, people? What have you done with those 2?!"

Lucifer got annoyed and said, "what a pain in the ass."

Lucifer snaps his finger and time instantly stops.

"Now let's continue with our discussion.'

Seraph was frightened at Lucifer as he stop the time.

Damn this man can easily stop the time without a chant? I couldn't even sense him using his power to stop the time. This just only shows that he can kill me in an instant without making a move. As expected of someone I choose. I must get into his favor at all costs. If I wanted to save that world I must please him.

"Oi, are you going to keep on staring at me or what?" Seraph managed to snap back to the topic.

"Uhhhm sorry I space out for a little bit. Now, where do we have left the topic?"

"you're about to explain how was your problem my problem too."

"ok, the reason why this is your problem is that. There is a 2 prophecy that has been revealed."

"tell me about it," Lucifer said.

Seraph said, "the first prophecy is that a God killer will rise 20 years from now and will kill me just to destroy the whole multiverse. Second, a demon lord from another world will rise to defeat the God killer which is you."

Lucifer said, "are trying to fool me?! You're just trying to ask me to become your knight and shining armor so I refuse to help you."

"But that God killer is related to your past life as well! He has a lot of hatred towards demons and he's planning to kill me and take my power so that he could create a multiverse without any demons."

That person is probably one of the humans I killed in my past life. It will be troublesome if that human succeeds. The demon race's lives are at stake. If that is the case I have to make my own move but this God might be plotting something. She might have come here to seek revenge for the fallen Gods that I've killed.

Well, I'll just try to see the truth for myself.

"sigh, if I help you out what will I get out of it?"

Seraph said, "I will let you create a kingdom in the world where humans accept the demons and let you live there for how many years you want."

"but I want to live in this world with my kingdom."

"Sigh, you should just give up on this world. You and your people will not fit in this world any longer. If you try to force it, it will become a bloody war."

Lucifer doubts Seraph's statement and said, "I don't believe you at all."

Seraph said, "you have the ability to see all the information that you wanted right? Why don't you see for yourself!"

Lucifer looked Seraph seriously and said, "I guess I'll investigate it."

Lucifer raised his right hand and a small black water monster came out of it.

Lucifer said, "Kamui, I want you to devour every last important piece of information of this world, don't live anything behind."

The monster speak up and said, "yes my lord."

Kamui turned into a huge black wave that travel across the globe in split seconds and return to Lucifer.

I see, I have no choice but to agree with her.

He looked at Seraph and said, "alright, I'll go along with what you wanted but."

Lucifer put his pointing finger at Seraph's forehead and create a red insigma.

"I'll have to keep an eye on you. If I sense your plotting something against me that insigma will kill you without harming the Multiverse."

Seraph smiled calmly and said, "if this is enough for you to trust me ill accept it."

Lucifer took out a baby and said, "I'll live this vessel here. I'll just look for another vessel in another world."

Seraph opened a portal and said, "just go to the portal I'll handle the mess here."

"I'll leave it to you then," Lucifer said.

Seraph smiled gently and said, "yes, you don't have to worry about this world anymore, demon lord Lucifer."

Lucifer smirked at Seraph and slowly enter the portal.

Let's see what is this world that she's offering me to stay looks like.

The portal disappeared along with Lucifer.

Sigh, finally, I managed to earn his trust and have him help me deal with my future killer. It was nerve-wracking to negotiate with someone that powerful.

Come to think of it, I haven't told him about the killer just being close by him since according to the prophecy the killer was just close by his side. Nah, I'll just leave it to him.

The time continued again and the security guards were surprised because Lucifer disappeared in instant.

The guards saw Seraph and said, "you! Where is your accomplice? Where did he go? How did he disappear?"

Seraph cast magic and said, "now, now, you don't have to know everything. Just go and fall into a deep slumber."

All of the guards fall asleep on the ground in instant.

Now, the next thing I need to do is to erase their memories of what happened today including those 2 couples' memories.