The next few days were a blur of pain, both mentally and physically, for Cole. Each morning began with Lia's fiery embrace and ended with Iris's training. It was a strange, exhausting, and exhilarating new reality. His body was developing a Pavlovian response: pleasure at dawn, geometric nightmares by dusk. His dreams had become a confused mess of forge-fire and formulae, passion and probability curves.

  The progress was achingly slow. He'd tried dozens of different strategies against Iris's golden grid. He'd tried wild unpredictability, only to be funneled into her inescapable kill boxes. He'd tried to anticipate her moves, but it was like trying to forecast a tidal wave with a pocket calculator. She wasn't just following the rules of the fight; she was the rules.

  His best outcome so far had been a twenty-second exchange where he’d managed to break through her initial theorems and engage her in a short sword fight, before she quickly got the best of him by solving for the point his ankle would buckle under the strain of a hard pivot.

  He lay on the sand of the arena floor, his lungs burning, his diagnostics flashing warnings about muscle fatigue. The sand had formed a Cole-shaped depression from how many times he'd been planted in this exact spot.

  "I am making terrible progress, aren't I?" Cole asked, the words tasting like grit and defeat.

  "Statistically, you're doing surprisingly better than I had forecasted," Iris replied, her sword resting on her shoulder as she analyzed the data logs from their fight.

  Cole pushed himself to his feet. “You don’t have to be nice here, Iris. At best, I can lock blades with you for half a minute.”

  "Why would I be nice?" She tilted her head with genuine confusion. The angle was exactly 15 degrees; she didn't do anything without precision. "Your success also determines the chances of whether Lucius and Senna die. I don't have time for 'nice'. If you were doing horribly, I would be telling them to call off the hunt and find someone else who can assist them. I have a list of twenty-one backup candidates for them. You're currently ranked third. You started at fourteenth. That's progress."

  “Well then… thanks. Oddly enough, that means a lot coming from you.”

  A fleeting smile flashed across Iris's lips. It lasted exactly 0.8 seconds, he'd been timing them. "Your adaptability index has increased by 14%. That is a non-trivial improvement. You are learning. Most students plateau at 7%. The ones who survive, anyway."

  She deactivated the golden grid, and the oppressive feeling of order lifted from the air. Cole's reflection immediately relaxed, no longer forced into right angles. Even his shadow seemed to sigh with relief.

  “We need to call it off early today. The arena staff will begin arriving soon; people will be trickling in within a few hours to see tonight’s Battle Royale. I got tickets for all of us, if you’d like to join.”

  As the words left her lips, Cole could have sworn he saw a glimmer of excitement flash in Iris's eyes at the mention of watching the fight. It was the most emotion he had ever seen from her.

  “Can’t have your money going to waste, so of course.” A smile breaking through his exhaustion.

  A few hours later, the group was in a private box overlooking the arena. The box was one of the premium ones, with smart-glass that could zoom in on any part of the fight, a fully stocked bar with drinks from several different cities, and seats that adjusted automatically to each occupant's spinal configuration.

  The roar of the crowd was a wall of sound that vibrated through the transparent armorplast of their viewing box. Fifty thousand voices united in bloodlust. The arena's air was thick with the smell of sweat and blood. Vendors moved through the crowd selling mild hallucinogens that supposedly let you feel what the fighters felt. Highly illegal, incredibly popular.

  Cole stared at Iris, whose usual calm, analytical composure had completely vanished. She was up on her feet, arms in the air, screaming at the fight like some rabid sports fan. Her tattoos were going nuts, showing combat analysis in real-time, odds projections, and what definitely looked like a betting pool she was running herself. It was an intense match between two Sequence Fours; one from the Swarm Domain, who'd become this writhing cloud of chrome insects, and the other from the Flesh Domain, whose body had twisted into this massive thing made of bone and meat.

  "RIP HIS AUXILIARY NERVOUS SYSTEM OUT!" Iris screamed, her voice carrying a level of violence Cole had never heard from her. "THE CHANCES OF RECOVERY FROM THAT IS STATISTICALLY INSIGNIFICANT!"

  “Well this is a new side of you I didn’t expect.” A bewildered grin was on Cole’s face.

  “Huh? How so?” Iris yelled, not taking her eyes off the fight as the Flesh Domain ripped a chunk of metal from the wall and hurled it at the swarm. “TEAR HIS ENDOCRINE SYSTEM OUT THROUGH HIS THROAT!"

  “The enthusiastic cheering for someone's gruesome death, mostly,” Cole noted.

  “Dying?” Iris scoffed, finally glancing at him. “Cole, this isn't killing. This is all theoretical violence in motion. It's beautiful.”

  “But don’t people die in the arena?” Cole asked.

  His words were met with an answer as the crowd roared at the defeat of the Swarm fighter, who re-formed into a humanoid shape and held his hands up, yielding. His chrome insects coalesced back into his base form, several thousand individual units moving in synchronization. His opponents extra limbs retracted with gristly pops that the arena's audio enhancers made sure everyone could hear.

  "Fighters constantly dying is bad for business," Senna chimed in, sipping a cocktail. "It isn't outwardly banned, but it's heavily frowned upon and can even lead to you getting bad matchups and less marketing as revenge by the arena promoters. Dead fighters can't sell merchandise or appear in advertising campaigns. There's more money in rivalry than revenge."

  "Plus the drama and rematches of bitter rivals between the two fighters is a big pull for the crowds," Iris added, her voice returning to its normal tone as the fight ended. Her tattoos switched from combat analysis to social media tracking, showing the real-time viewer engagement metrics. "These two on screen hate each other. I saw the pre-fight hype reel where one head-butted the other on camera, their own security pulling them back to break it up. In real life? Well, if you hack the video feed of a cleaning drone in a private bar in Silent City, you can see them laughing over drinks. They're actually brothers-in-law. The hatred is their gimmick. They practice their trash talk together."

  “So are the fights staged then?” Cole asked.

  "Very much real," Iris corrected. "They both want to actually win, and the physical toll is genuine. The brother-in-law still broke five of his ribs and ruptured his spleen. Family reunions must be awkward. But there is a lot of manufactured theatrics that go behind everything else. It was the part I really hated when I used to compete."

  Cole and Alice fell silent, turning to stare at her.

  “You used to compete, Iris?” Alice’s voice was full of awe.

  "Yeah. They used to call me The Mosaic Knight because of my sword," Iris said casually. "And because I had a habit of turning my opponents' attack patterns into fractal art. Very geometric. Very painful."

  "She was in the top three rankings for her Sequence in all of Storm City," Lia added. "Would have been number one, but she refused to do the storyline where she was supposedly in love with her rival.”

  “Where has this backstory been this entire time?” Cole looked at Iris with entirely new eyes. “So why did you quit?”

  “Like I said, the marketing and all the fake drama was too draining for me. My Domain requires immense focus, and the constant media appearances were a suboptimal use of my cognitive resources. They wanted me to cry on camera once. It took six hours of preparation for a four-minute interview. Plus, having to interact with all those fans? I needed two days just to mentally reboot. One fan wanted me to sign her baby. The baby. I still don't understand the logic. Merc work pays comparably, the risks are more quantifiable, and I don’t need to fake so much of myself,” Iris replied.

  This story originates from Royal Road. Ensure the author gets the support they deserve by reading it there.

  Just then, the lights in the arena dimmed, and the crowd's roar intensified. Spotlights swept across the sand-covered floor. Where they passed, holographic advertisements for organ banks, weapon augments, and insurance policies for Domains briefly materialized.

  "And now," a booming announcer's voice echoed through the stadium. "The moment you've all been waiting for! The main event! A duel between two rising stars of Sequence Five! In this corner, the master of mathematics, the living algorithm, the man who will solve you for zero… CASSIAN, OF THE PATTERN DOMAIN!"

  Cassian walked out from a tunnel on the far side of the arena. He was tall and severe, dressed in a white and gold armored suit that was all clean lines and perfect angles. In his hands, he held nothing, but spools of hyperalloy wire gleamed from his wrist-bracers. The wire was so thin it was nearly invisible, only catching the light when it moved.

  "I HAVE MONEY ON THIS ONE!" someone shouted from a nearby box. The accent was thick Void City; they'd traveled just for this fight.

  "And in this corner," the announcer roared, his excitement causing feedback in the audio system that created its own small lightning storm above the arena, "the queen of chaos, the eye of the hurricane, the woman who laughs at the concept of certainty… VEYRA, OF THE STORM DOMAIN!"

  The crowd erupted as Veyra, a woman with a wild mane of white hair and a jagged, lightning-shaped scar over one eye strode into the arena. She wore scarred, black combat leather and carried a blade of fractured metal and suspended lightning that flickered in and out of reality like a broken hologram. The blade existed in ten probable states simultaneously, and just holding it steady was an act of will. A wolfish smile was plastered on her face.

  "Look at her stance," Iris murmured. "She's favoring her left side by 4.2%. Old injury, probably. Cassian will have noticed."

  "This is going to be good," Lucius said, leaning forward, his eyes glued to the arena. Static electricity from his excitement was making everyone's hair stand on end. "Logic versus disorder."

  Cole leaned forward too, a knot of anticipation in his stomach. It was an eagle's eye view of the lesson Iris has been trying to teach him.

  The fight began with Cassian raising his hands, shimmering threads of hyperalloy wire shot from his bracers. Each wire vibrated at a different frequency, creating a harmony that was somehow both beautiful and deeply unsettling. With deft, precise movements, he began to draw in the air, the threads snapping taut to form a massive web of triangles and hexagons that hung in the air between him and Veyra.

  Veyra laughed, creating an echo that sounded like thunder mocking mathematics. She charged, her Stormblade singing as it cut through the air. As she approached Cassian's web she split into seven identical versions, each one taking a different path toward him.

  Cassian's eyes, glowing with mathematical symbols, tracked them all. Equations literally scrolled across his pupils; he was calculating in real-time. With a twitch of his fingers, his web reconfigured itself, new threads shooting out to intercept five of the seven Veyras. The threads wrapped around the probabilistic echoes, and with a flash of golden light, dissipated them.

  But two Veyras got through. They struck the threads of the main web, and a shower of sparks erupted. The threads held, but the attack had served its purpose. It had tested his defenses.

  "Pretty web. Let me tear it." Veyra’s voice seemed to come from both of her remaining forms at once. She raised her blade, and it split into a dozen “possible” strikes, each one a shimmering afterimage of the real thing. The storm of phantom blades descended on Cassian.

  Cassian didn’t flinch. His expression was one of intense concentration. “Theorem invoked,” he whispered. “All attacks must be linear. All impacts must be perpendicular.”

  A glowing, golden wireframe grid snapped into existence around him. The crowd gasped, as they could feel it even from behind the shields, reality becoming more rigid, more defined.

  The moment Veyra’s chaotic, multi-angled assault entered the grid, it was forced to conform. The dozen phantom strikes collapsed into a single, predictable, ninety-degree downward slash. Her Chaos Conductor ability sputtered, the wild arcs of her blade snapping into rigid trajectories.

  Cassian met the strike with his own web of threads, which had also snapped into right angles. The impact was jarring, a thunderclap of energy that shook the arena. The shields around the crowd stuttered, struggling to contain the discharge.

  Just as Iris had done to him, Cassian now had Veyra trapped. From his vantage point, Cole could see it perfectly. Veyra was at a disadvantage. Every move she made was forced into a rigid, predictable pattern. Cassian pressed his attack, his threads now acting as weapons. They shot out aiming the space around her, weaving a complex, three-dimensional prison.

  The crowd's chant was a divided roar, half for Cassian, half for Veyra.

  Veyra fought back, her blade deflecting the threads, but for every one she parried, Cassian wove two more. He was solving her, reducing her to a variable in a cage.

  Cassian tightened his web, the threads pulling taut into a closed dodecahedron around Veyra, her movement options reducing to zero. Checkmate.

  But then Veyra did something Cole didn't expect. She stopped fighting. She stopped struggling against the cage and just stood there, her head tilted, observing. Her eyes became sharp and focused, darting along the lines of Cassian's golden grid. The crackle of random probability arcs around her stabilized, pulling inward until she was surrounded by a deceptively calm aura. She was learning the rules of his system.

  "No," Iris breathed, leaning forward. "She's not... she can't be..."

  “What is she doing?” Cole said, completely confused.

  "She's doing what I've been trying to teach you," Iris said, her voice filled with something like awe. "She's not fighting the system. She's becoming it."

  Then he saw it. Veyra's movements changed. She wasn't the wild storm anymore. She began to move within the grid, her steps sharp, her turns crisp pivots. She was adapting. Each movement was deliberate, calculated; she was thinking like a Pattern fighter while maintaining her Storm Domain powers.

  Cassian pressed his advantage, his threads shooting forward. But Veyra, now moving with the same rigid logic as him, evaded them. She was exploiting the certainty. If everything had to be perpendicular, then she knew exactly where the threads couldn't go.

  Then she adapted her own power. Instead of her usual frenzied split into seven different paths, she created seven versions of herself phasing between the nodes of Cassian’s own grid. His theorem dictated how she could attack, not where she could stand. One second she was in the top-left corner, the next she was in seven different places at once, all of them aligned with his world. She had turned his ordered system into a shell game with no answer.

  "She's using quantum superposition within classical geometry." Iris’s tattoos displayed error messages as they tried to calculate what was happening. "That's... that's a paradox. But she's doing it."

  Cassian's eyes widened slightly, the first sign of confusion he had shown. His theorems were starting to fragment, errors cascading through his proofs. He had created a flawless system, but the unknown was now behaving in a way he hadn't expected.

  "Impossible," he muttered, his voice tight with disbelief. 'Constants can't…'"

  Then his expression hardened. His hands moved in sharp, geometric patterns, and Cole felt the air pressure shift.

  "He's rewriting the rules," Iris said, her voice urgent. "He's changing the theorem mid-fight."

  The golden grid flickered, then snapped into a new configuration. The perpendicular lines twisted into triangular lattices, the nodes shifting positions entirely. Where there had been predictable right angles, now there were sixty-degree intersections, the entire geometry restructuring around Veyra's positions.

  "New theorem," Cassian announced, his voice steadier now. "All movement must be linear. All positions must be singular."

  The seven Veyras flickered, destabilizing. His first theorem had controlled her attacks. This one targeted her existence. Four of them collapsed instantly as the new rule forced singular existence. But Veyra was already moving. She'd seen the shift coming.

  "She's not waiting for him to finish," Iris breathed.

  As her copies collapsed, Veyra pulled their momentum into herself. Each dissolving echo fed her speed, a slingshot of combined velocity that launched her forward faster than the grid could recalculate. She was a blur of turns and quantum stutters, closing the distance in the half-second gap between Cassian's old rules dying and his new ones taking hold.

  Cassian's hands were still moving, still trying to lock down the new theorem, when she was already inside his guard.

  Her Stormblade, now condensing the ambient energy into a razor-thin edge, drove into his chest plate.

  There was a dull, ugly thud as the Entropic Discharge destabilized reality at the point of impact.

  Cassian’s armor un-made itself at its weakest molecular bond, a crack spread across its surface before splintering into jagged fragments. He was flung backward, his Domain powers glitching like corrupted code as the arena lights stuttered and the roar of the crowd warped into a high-pitched static buzz. He landed in a heap on the sand, the golden grid around him collapsing in chaotic ripples.

  Veyra stood over him, her blade crackling with residual arcs of possibility, her chest heaving. She looked down at him and gave a wink that was somehow both dismissive and respectful. The crowd's stunned silence snapped into a deafening, electric cheer, as if the storm itself was applauding.

  Money changed hands in the private boxes. Someone had just become very rich, and someone else was wondering how many organs they'd need to sell to cover their losses.

  “Holy shit,” Cole breathed, a profound sense of understanding washing over him. He had just witnessed a fight where one opponent had assimilated the other's strategy and threw it back at them.

  “That,” Iris said, her voice calm, but her eyes burning with intensity as she looked at Cole, “is how you should be fighting, Cole.”

  "Where the hell can I get that sword?" Lucius shouted, breaking the moment. "And does it come in Storm Domain colors?"

  The lights in the arena came back up, and medics rushed out to check on Cassian. He waved them off, standing on his own power, and gave Veyra a formal bow. She returned it, and for a flash, Cole saw what Iris meant about the theatrics: the respect was real, but they were already planning their rematch, calculating how to make the next fight even more spectacular.

  But in 1933 Manhattan, even dreams come at a price.

  Analyze awakens inside him, every person, machine, and cracked brick becomes a puzzle he can fix… and a secret he’s not meant to understand.