The Arbitrage Tycoon of Worlds

The cellar was damp, smelling of rot and ancient dust, but Xavren didn’t mind the grime. His focus was entirely on the shimmering distortion floating above the stack of broken crates. It looked like a jagged tear in the fabric of reality—a vertical slit of light that pulsed with a faint, rhythmic violet hum.

He wiped the sweat from his forehead with the back of his hand, his heart drumming against his ribs like a trapped bird.

"Okay, Xavren, just move it," he muttered to himself, his voice barely a whisper in the gloom. "Don’t trip, don’t look at the light too long, just get the goods through."

He reached for the heavy sack of grain, his knuckles white. The burlap was rough, biting into his palms, and the weight pulled at his tired shoulders. He had spent his last few copper coins on this supply in World A—a world where grain was as common as dirt—hoping, praying, that the rumors he’d heard about the other side were true.

He shuffled forward, his boots crunching on loose gravel. As he stepped into the rift, a sensation like cold water rushing over his skin washed through him. The pressure was immense, a sudden shift in gravity that made his teeth ache.

He stumbled out into a world of blinding, golden sunlight. The air here smelled of clean, dry earth and toasted wheat. He dropped the sack with a heavy thud, his lungs burning.

"Finally," he gasped, leaning against a weathered stone wall. He wiped his palms on his trousers. "Still alive. That’s a win."

A voice rang out from the nearby alleyway, sharp and curious. "What in the blazes are you doing here, lad? You’re blocking the loading path."

Xavren froze. A merchant, dressed in heavy, thick-spun linen robes, stood with his arms crossed, squinting at Xavren’s mismatched outfit.

"Sorry, sir! My apologies," Xavren stammered, pulling the sack toward him. "I didn't mean to get in the way. Just... just moving stock."

"Moving stock? You look like you’ve been dragged through a swamp, boy," the merchant said, stepping closer. He looked at the burlap sack with a professional, discerning eye. "Is that grain? Let’s see what you’ve got. If the quality is decent, I might take it off your hands for a handful of silver. We’re short on supply for the market."

Xavren’s heart did a backflip. Silver? In his world, this grain was worth pennies. He swallowed hard, trying to keep his composure. "It's top-grade. Harvested from the northern fields. I’m new to the city, see? Just trying to make a living."

"Northern fields? That’s a long trek, and you look like you haven't slept in a week," the merchant replied, chuckling as he poked the sack with his cane. "Fine. Give it here. I've got no time to waste on a shivering novice. You want the silver or are you just going to stare at me all day?"

"I want the silver, sir. Absolutely," Xavren said, his hands trembling slightly as he handed over the sack.

The merchant fished a pouch from his belt, counted out several heavy, gleaming coins, and tossed them toward Xavren. "Take it and clear out. My guys will be here in a minute, and they don't like strangers loitering by the stores."

"Thank you, sir! Thank you kindly!" Xavren caught the coins, feeling their weight. They were cold, solid, and undeniably authentic.

He didn't wait for a second invitation. He turned back toward the shimmering rift, which stood nearly invisible against the back wall of the warehouse. He slipped through the distortion, the transition again pulling at his senses like a physical hook.

He landed back in his basement, the air here stale and cold. He let out a long, ragged breath, sliding down against the stone wall.

"I actually did it," he whispered, pressing the silver coins to his chest. "I really did it."

Just as he started to relax, a heavy footstep sounded from the stairs above. It was followed by the distinct creak of the floorboards directly over his head.

"Xavren? You down there?"

It was Odrik Marn, the neighbor who never knew when to mind his own business.

"Xavren! I heard you stomping around," Odrik’s voice boomed through the thin floor. "And I saw you dragging something heavy into the basement earlier. You building something, or just hiding things you shouldn't be?"

Xavren scrambled to his feet, frantically covering the shimmering rift with a tattered tarp. "Just fixing a leak, Odrik! You know how this old place is. Everything’s falling apart."

"A leak?" Odrik’s voice grew closer as he descended the stairs. "In the basement? You’re a terrible liar, Xavren. Open up. Let’s see what’s going on."

"It’s not a good time, Odrik!" Xavren shouted, his pulse racing. He grabbed a broom and frantically brushed over the muddy tracks he’d left on the stone floor—marks that hadn't been there ten minutes ago. "I’m cleaning up some gray water. It’s a mess."

"I don't care about the mess. I care about the noise," Odrik grumbled, his heavy boots clanking on the stairs. "You’ve been acting strange for weeks. You haven't been at the market, and you’ve got that weird look in your eyes. What are you hiding?"

"I'm not hiding anything! Just mind your own roof, Odrik!" Xavren backed toward the tarp-covered rift, his hands shaking. "I'll talk to you later, alright? I'm beat."

"Fine, fine," Odrik muttered, stopping just outside the cellar door. "But don't think I haven't noticed. You’re up to something, and if it affects my property, you’ll be hearing from the local guard."

Xavren waited in total silence, listening to the heavy thud of Odrik’s boots as he finally turned and walked away. He stood there for minutes, his chest heaving, listening until the muffled sounds of the street outside faded into the mundane hum of the afternoon.

"Close," he breathed, wiping sweat from his brow. "Too close."

He reached into his pocket to check the silver coins, wanting to revel in his victory once more. His fingers brushed against the smooth, cold metal, but then, he felt something else. A sharp, jagged edge.

He pulled it out, frowning in the dim light. It wasn't the silver coin the merchant had paid him. It was a smaller, thinner piece of metal—a coin, but one with an engraving he didn't recognize. A sun with a weeping eye at its center.

He tilted it. The silver glimmered, but the reflection felt wrong. It didn't belong here. It was a currency from a place he hadn't even visited, a relic that carried the weight of a different history.

He stared at it, his throat going dry. "Where did this come from? I only grabbed what he gave me."

A cold realization settled in his gut. The rift hadn't just been a doorway. It had been a vacuum, and he had reached through it with his fingers, brushing against things he hadn't intended to touch.

If he was bringing back more than just grain, if he was dragging pieces of that other world into his own… what else had he brought with him?

He looked back at the tarp-covered rift. The violet pulse was still there, visible beneath the fabric, rhythmic and hungry.

"I have to be more careful," he whispered, staring at the weeping sun coin. "Much, much more careful."