Isekai Quartet (my version)

Chapter 20: The Other Side

The boulder stopped mid-air, then it goes back to the mountain.

Ainz: "(It is a projectile! There is just no way a giant boulder was rolling down unto us. And please don't tell me it was a coincidence!)"

Suddenly, a man appears from the ground in front of them. He have 3 holes on his face. 2 are eye sockets. 1 mouth. It is obvious that he is a doppelganger. His skin is blood red, he is wearing some kind of red armor with black lines. His armor is very sturdy.

Ainz: "(Wait. Where did this guy come from!?)"

The doppelganger grows teeth in his mouth. All of its teeth are canine teeth. Eyeballs starts to pop out from his eye sockets. His eyes are actually human eyes, but it's too small to fit inside his eye sockets, so it floats in there

Albedo however, is furious. Furious because the doppelganger didn't bow down to Ainz. Demiurge probably felt the same thing.

Albedo: "Who is this filth who didn't bow down to Ainz-sama!? Demiurge, command him to bow down to the ground!"

Demiurge use his control spell.

Demiurge: "Bow-"

The doppelganger disappeared into the air.

Ainz: !!!

Demiurge: "It disappeared into the toxic air. Does this creature can transform into any object!?"

Ainz: "Demiurge, if what you say is correct, that means this doppelganger is not like we've ever seen before. No doppelganger can transform into non-living objects."

Ainz sensed a living being behind him. He turned back sees the doppelganger ready to strike him.

Ainz: "Isn't that predictable."

The doppelganger raises his hand and engulfed his hand on fire. He swings down his hand. Ainz dodged sideways. The hand hits the ground unclenched. When it hit, the ground below his hand melted, turned into a hand-shaped magma.

Doppelganger: "You three... You are trespassing!!! Get out!!! GET OUT!!"

The doppelganger roars and charges towards Albedo. He clenched his fists and swings his arm vertically.

Albedo grabs his arms. But the doppelganger is very strong. She struggles to find an opening while grabbing his hand.

The doppelganger moves his legs. He is trying to push Albedo to the ocean of lava.

Ainz: "Demiurge! Stop him!"

Demiurge: "Aspect of the Devil - Razor Sharp Claws!"

Demiurge's claw elongated and slashes the doppelganger from behind- Oh wait, nevermind. The doppelganger disappears into the air and reappears again in front of Demiurge and grabs his neck, choking him.

Doppelganger: "I am sensing danger from you. You've been trying to put a spell on me twice. I am going to kill you... For good."

Ainz: "Reality Slash!"

Ainz created an invisible slash, not even wind. It cuts through space-time and slashed the doppelganger's right leg without touch Demiurge.

Doppelganger: "ARGGH!"

The doppelganger roars in agony. His leg fell off. But he didn't let go his grasp on Demiurge. He is still Standing still.

The doppelganger's hand glows. It means that it is getting hotter. His hand is hotter than lava. Thankfully, Demiurge is immune to fire, so heat is no big deal for him.

Albedo grabs the doppelganger from behind and throws him upwards.

The doppelganger loses its grasp on Demiurge. He was thrown into the air, and then disappeared into flames. He is gone... For now.

Ainz: "Albedo, Demiurge, let's get out of here!"

Albedo & Demiurge: "Yes, Ainz-sama!"

They go back to the school. But as they pass through the door, the doppelganger reappears behind them, meters away. He runs to them.

Ainz: "Get out of here! Quick! He is behind you!"

Albedo and Demiurge ran through the door. After that, Ainz fires an iceball towards the doppelganger. The doppelganger got hit, probably intentionally. He screams in pain. It seems like he is weak against cold attacks.

Ainz slammed the door shut. They returned into the school.

Ainz: "I'll say this, you two did great."

Demiurge: "We are not worthy of such praise, Ainz-sama."

Ainz: "It doesn't matter. We must discuss on the information we gathered."

Demiurge: "That doppelganger has so much brute strength. I don't think that iceball is enough to damage him the slightest. He's probably immune to fire since his attacks are fire based."

Ainz: "What about you, Albedo?"

Albedo: "His strength is beyond my expectations. I thought I could handle him only with my strength. But it appears that he is stronger. Unlike whoever the enemy is in the flower meadow, he is aggressive."

Ainz: "And then the most obvious one, he can transform into non-living things, unlike the doppelgangers we used to see. Also, his legs... When I cut his leg, it reattached when we are running through the door. It seems he had some healing/regeneration ability."

Demiurge: "I agree. Ainz-sama, I have a theory."

Ainz: "I'd like to hear your theory."

Demiurge: "Thank you, Ainz-sama. The way he transform... I think Ainz-sama already know this but-"

Ainz: "(Really!?)"

Demiurge: "He transforms too fast. He can transform in a blink of an eye. He can also make no sound when he transform. There must be a way he could do that. There is no way a doppelganger can transform that fast."

Ainz: "(Demiurge is right!) Maybe there is a hidden power that we didn't even see. This doppelganger may not be from our world. He is guarding something. He said that we are trespassing. What if, we could pass through him, and finds out what is he guarding?"

Demiurge: "That's a great idea, Ainz-sama!"

Albedo: "There are only three of us getting in the other side. But if we bring our friends, we might have a chance to stop him."

Ainz: "That is for another day. For now, we return to Nazarick. Gate!"

A portal gate appears beside Ainz.

Ainz: "Get in. We return to Nazarick and form a plan."

Albedo & Demiurge: "Yes, Ainz-sama!"

They all get in and transported to Nazarick. But even at those discussions, Ainz is still confused of what happened when he opened the door. How did it lead to THAT place? It was supposed to lead to the flower meadows, where every attack is plant based (at least)! Perhaps the door leads to a different specific places everytime? No one knows for now...

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Meme for the day:

Regulus: "I can create a slash that can cut space-time. It can literally cut everything!"

Ainz: "Same, me too."

Regulus: *Confused screaming*

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Trivia:

If Ainz's Reality Slash and Regulus' slash touched each other, it will be stopped in place. Anything that touched it will be sliced, except Satella because... Uh... You know... (Immortality)