Unusual pair

Dullahan thrusts his scythe into the ground. It begins to shatter, glowing green through the cracks. It spreads until it covers an entire imperial city. He waits a moment, and then... it instantly bursts into green flames. The city is charred after the fire dies down.

Zombie: "What the hell was that for? Do you want to get the Heroes' attention?"

Dullahan: "..."

Zombie: "You know I'm not a telepath... Jeez, how did we end up together anyway?"

They sense an ominous presence nearby.

Zombie: "Who is he? Was he watching us all this time?"

A man looks at them. He is red-haired and muscular, wearing revealing armor. He has his arms crossed and a serious expression, which turns into a maniacal grin when Zombie notices him.

Zombie: "Is he a Hero? We should get out of here before-"

Dullahan charges forward, carrying the man's body with him. They pierce through a mountain and land on another. A massive red fist descends from the sky and flattens the mountain.

Zombie: "Huh? What is this place?"

Zombie is suddenly tied to a chair in a dimly lit room. A girl smiles in front of him. She has pink hair, wears a black suit and a top hat.

Girl: "You're such a strange traveler."

Zombie: "What do you mean? Just kill me already. Oh, wait, you can't."

Girl: "Of course I can. You may be a zombie, but I'm more powerful than I look."

Zombie: "Trust me when I say I'm immortal. Humans don't have curses, do you?"

Girl: "Enough about you, let's talk about me. Do you know why I have you here, at my mercy?"

Zombie: "You want information."

Girl: "Exactly. What do you know about the emperor of the undead kingdom?"

Zombie: "What makes you think I would give away such valuable information for free?"

Girl: "I'm just trying to make conversation. I don't really care about my job."

Zombie: "I don't care about my kingdom either. So much so that I don't know my family."

Girl: "You're searching for a purpose."

Zombie: "So are you."

Girl: "This isn't the last time I see you. Go save your friend."

Zombie suddenly finds himself in front of a black market. He enters, confused. There are several huge tubes containing high-level beasts. One of them is Dullahan. He stops in front of it.

Zombie: "My friend, huh? We're not even from the same family. We don't have the same goals, we're just acquaintances."

Rich woman: "A zombie! Quick, guards, arrest him! He's trespassing human territory!"

Merchant: "We are open to any species, as long as you can pay. It doesn't have to be cash."

He places his hand on her shoulder, calming her. He is a pale, purple-haired man wearing a black cloak.

Merchant: "Are you interested in this beast? He's at least dragon level, from what my client told me. And the chamber doesn't lie, see?"

He points to a screen in front of the tube, specifying Dullahan's levels of strength, speed etc.

Zombie: "I can't understand his language... How could I understand that girl?"

Merchant: "If you have no money, you can fight in the coliseum and earn the respect of the public. The beast will be yours if you satisfy them enough."

Zombie agrees, not knowing what he has just heard. The Merchant hands him a map with the location of the coliseum. The time is not specified, as anyone can join the queue at any time. Even if it were specified, he would not know how to read it.

He goes there and is greeted by a Lich.

Zombie: "He's from the undead kingdom... What is he doing here?"

The Lich casts a spell with his book, enhancing Zombie's linguistic abilities. Now, all the screams within the coliseum can be understood.

Zombie: "Thanks for that, I guess... Hey, have you seen a Dullahan head around? My friend lost his..."

Lich: "..."

Zombie: "Another quiet one... Not that it matters. I just need to get inside, right?"

He enters the waiting room. There were many other low-ranking fighters. He was probably the strongest in the room.

After a while, it was his time.

Vampire: "The next fighter is... he didn't sign his name. Let's call him Zombie. Against a high-grade skeleton!"

He walks into the arena.

Zombie: "Huh? Where is the arena?"

He can only see a vast landscape with mountains and multiple biomes. Zombie looks back. The door is gone.

Vampire: " As a reminder of the rules, both participants are trapped in the Lich's augmented dimension until one of you is seriously injured or surrenders. In other words, you can give your all without worrying about the audience!"

A large armored skeleton appears before him. Only his head is unarmored. He wields a greatsword.

Zombie: "Another undead... the human kingdom is more inclusive than I thought. Or they just want us to kill each other."

He opens his arms, ready to use his magic.

Zombie: "None of us can die anyway... maybe this is just for entertainment. At least I can do my best without worrying about my life or his."

The skeleton steps forward and brandishes his greatsword. Zombie crouches down and kicks his leg, trying to throw him off balance. Instead, the skeleton kicks him with his other leg, sending him flying until he lands in the middle of a village.

Zombie: "None of this is real, right? I don't want to be convicted of murdering a village."

Zombie thrusts his arms into the ground, infecting it with dark magic. The grass and crops begin to rot. The village rapidly deteriorates. The skeleton steps in, unfazed by his magic.

Zombie: "Just as I thought, my magic doesn't work on most undead..."

The skeleton advances, destroying the village buildings in its path. Zombie rolls to the side, dodging it. He rips off his own arm and throws it at the skeleton. The arm explodes midway, releasing a powerful black dust.

Zombie emerges from the smoke and kicks his opponent towards a forest. He follows him, rotting all the trees and making them fall, trapping the skeleton. Zombie grabs his head and twists it off his spine.

Vampire: "Zombie takes the win!"