Here's a thing they don't teach you in any programming course, legitimate or otherwise:

  Knowing how a system works and knowing how to survive inside it are two completely different skill sets.

  I could see the guard's attack script. I could read his behavior tree like source code printed on paper. I understood, on a technical level, exactly what he was going to do and in what sequence he would do it.

  None of that made his spear any less sharp.

  He recovered from his first thrust faster than I expected—apparently the AI had an error-handling block I'd missed—and came at me again. Low this time, angling for my legs. The code scrolled:

  guard_recover_from_miss()

  SELECT attack_pattern FROM [low_sweep, overhead, thrust]

  WEIGHTED BY target_position AND target_size

  EXECUTING: low_sweep

  I jumped. Barely. The spear shaft caught my ankle and I came down wrong, cobblestones slamming into my knees hard enough to send white sparks across my vision.

  The real problem with reading code in real-time is the processing overhead. I could see what was coming, but translating that information into actual physical movement required a body that had combat training, which mine absolutely did not. I was a person who typed for a living. My most extreme physical activity was the aggressive finger-pointing I did at unresponsive servers.

  Two more guards reached the edge of the square, their nameplates updating:

  [NPC: CITY WATCH - UNIT #3851]

  [NPC: CITY WATCH - UNIT #3852]

  Status: ENGAGING HOSTILE

  Threat: HIGH [GROUP FORMATION ACTIVE]

  Group formation active. Of course there was a group formation bonus. The original guard pressed his advantage, spear raised for an overhead strike, and I scrambled backward across the cobblestones, hands slipping on slick stone, brain running hot with the kind of frantic calculation that had gotten me through a dozen desperate server intrusions at three in the morning.

  Think. You can see the code. USE it.

  If this world ran like a system, then everything had variables. Not just behavior—objects. Items. The weapons they were carrying. Back in the interrogation room, the handcuffs had an object reference that pointed to a table. I'd broken the reference, not the handcuffs themselves.

  The spear had stats. I'd read them.

  Which meant the spear had variables.

  The guard's arm came down and I threw myself sideways, the iron tip sparking off the cobblestones where my head had been. I rolled, clumsy, landed behind a market stall, sending cabbages cascading across the square while the vendor screamed something I didn't understand.

  I focused on the spear.

  Stared at it with everything I had, the way I'd stare at a packet trace, the way I'd stare at obfuscated code looking for the exploit hiding inside. The stats floated above the weapon:

  [ITEM: STANDARD-ISSUE PIKE]

  Damage: 2d6+2 PIERCING

  Durability: 47/50

  Quality: COMMON

  Owner: UNIT #3847

  WEAPON_EQUIPPED: TRUE

  There.

  The variable. The flag. A boolean sitting right there in the open with no access controls, no validation, no authentication requirement whatsoever.

  It was the most basic security failure I'd ever seen. Someone had shipped this world's physics engine without even implementing permission checks.

  I reached for the variable the same way I'd reached for the handcuff's object reference—not with my hands, but with the part of my brain that had always felt like an extra sense, the pattern-recognition engine that my MIT professors had called remarkable right before campus security escorted me off the premises. I found the memory address, wrapped my intent around it, and flipped it.

  WEAPON_EQUIPPED: TRUE → FALSE

  The guard's spear vanished.

  Not dramatically. Not with a flash or a thunderclap. It simply stopped existing in his hands between one moment and the next, mid-swing, which meant his arm continued its arc through empty air with the full momentum he'd committed to the attack. He spun completely around, stumbled, looked down at his empty hand with an expression I would've found hilarious under literally any other circumstances.

  The two backup guards stopped dead.

  "Her hands," one of them said. "She didn't—there was no—she didn't use a wand—"

  I ran.

  In the complete absence of any better plan, sprinting seemed reasonable. The square erupted around me, market stalls and their owners becoming a chaos of overturned produce and shouting as I bolted through the crowd, ducking under a woman's basket, vaulting—extremely ungracefully—over a cart of clay pots.

  An alarm bell started ringing somewhere above the rooftops.

  I catalogued the square layout in the half-seconds I had between footfalls: three exits, one wide main road leading deeper into the city, two narrow alleys. The guards were between me and the main road. Both alleys were narrower than I'd have liked. I picked the darker one and ran until the daylight behind me was a thin rectangle and my lungs were filing formal complaints.

  The alley ended in a wall.

  Not a metaphorical wall. Not a conceptual obstacle representing my limitations. An actual stone wall, four meters high, with no convenient handholds and a texture that looked like it had never been climbed in its architectural history.

  I turned around. Four guards filling the alley mouth. And behind them, moving with the unhurried confidence of someone who had never once needed to hurry:

  [NPC: WATCH CAPTAIN - ALDRIC BRENNAN]

  Level: 31

  Status: CONTAINMENT PROTOCOL ACTIVE

  Threat: EXTREME

  Level thirty-one. I didn't know what that meant in concrete terms yet, but I had a strong intuition that it meant very bad for me.

  He looked at me the way experienced security professionals look at someone they've already caught, which was infuriating because I wasn't caught yet, technically. I was just temporarily out of visible exits.

  I turned back to the wall and looked at it properly. Not with my eyes. With the part of my brain that read code.

  The wall materialized in my vision:

  [OBJECT: ALLEY WALL - SECTION 4C]

  Material: SANDSTONE

  Height: 4.2m

  Durability: 340/340

  Structural Integrity: STABLE

  Load-bearing: YES [AFFECTS: CONNECTED_STRUCTURES]

  Three hundred and forty durability. Maximum durability. Structurally stable, load-bearing, affecting connected structures.

  Stolen novel; please report.

  I'd disabled a spear by flipping a boolean. That had cost me nothing—no resources, no physical sensation, just focus and intent.

  What would it cost to take sixty points off a wall's durability?

  I reached for the variable and found it immediately—the number sat there in the world's architecture like an unlocked config file, practically inviting modification. I grabbed it, pulled, pushed, tried to drag the value down.

  Something inside me lurched.

  Not pain. More like suddenly trying to run a render farm off a laptop battery—a massive, immediate drain that went from fine to empty in a single second. The world tilted. My vision narrowed to a tunnel. I had just enough awareness to understand what was happening: I had resources in this system, some kind of mana pool I hadn't known about and therefore hadn't been managing, and I'd just thrown all of it at a sandstone wall.

  The wall disagreed with its own durability score.

  The explosion knocked me backward.

  Not a controlled breach—more like the wall decided physics was a suggestions document and filed for an exception. Stone fragments turned the alley into a horizontal blizzard. The guards dove for the ground behind me. The captain threw up some kind of shimmering barrier that absorbed the debris, his face shifting from unhurried confidence to something significantly more alert.

  I was already through the hole, or more accurately, the hole was already around me, the wall having thoughtfully relocated itself into a wide radius of rubble.

  And then I was on my knees in a broader street, vision doing something concerning, the edges of my sight dissolving into static. My hands on the cobblestones. My arms shaking. Every thought arriving slightly out of order.

  The system chose this moment to be helpful.

  ALERT: CRITICAL MANA DEPLETION

  Current Mana: 2/100

  Warning: Sustained channeling at 0 MP may cause SYSTEM CRASH

  Recommended Action: REST AND RECOVERY

  SYSTEM NOTICE: UNDEFINED USER DETECTED

  Cross-referencing with... [ERROR: NO MATCHING RECORDS]

  Emergency Registration Protocol Initiating...

  REGISTERING NEW USER...

  Name: VOLKOV, ALEXANDRIA

  Class: NULL [WARNING: INVALID CLASS — PROCEEDING ANYWAY]

  Starting Level: 1

  Database Entry Created

  LEVEL 1 ACHIEVED

  New Ability Unlocked: DECOMPILE [ACTIVE - 20MP]

  Mana Recovery Rate: 1MP / 30 seconds

  WELCOME TO THE COVENANT OPERATING SYSTEM

  Please refer to your local Mage Guild for onboarding documentation.

  "Level one," I said to the cobblestones, my cheek resting against them because sitting up had become aspirational. "Fantastic. Amazing. I've been a wizard for four minutes and I'm already on the floor."

  Footsteps.

  Not the heavy tromp of boots. Light and fast, bare feet on stone.

  A hand grabbed my arm.

  I almost fought it—adrenaline physics, fight-or-flight executing on stale inputs—but the hand was small, the grip surprisingly strong, and it was pulling me sideways rather than subduing me.

  "Move," a voice hissed. Young. Urgent. "Now. Move."

  My legs made a group decision to participate in survival and I moved.

  The cellar smelled like old candle wax and nervous people.

  I sat on a wooden crate, back against a stone wall, waiting for my vision to finish reassembling itself while the boy who'd dragged me through half a city's worth of back routes bounced on his heels two feet away. He was maybe fifteen, maybe younger, with close-cropped dark hair, shoes held together by what appeared to be optimism, and a nameplate that read:

  [NPC: PIP — STREET URCHIN]

  Level: 4

  Status: EXCITED

  Threat: NONE

  He was not talking to me. He was talking at me, gesturing broadly, apparently unable to contain himself.

  "—never seen anything like it, she just looked at the spear and it disappeared, and then the wall, did you see the wall—"

  "Pip." A woman's voice. Flat. Authoritative.

  The cellar had five other occupants I'd been too blurred to fully catalogue until now. They sat around a table constructed from salvaged timber and wishful thinking, surrounded by candles, scattered papers, and several objects I was fairly certain were magical artifacts, though they presented to my Code Vision as heavily encrypted—values present but obfuscated, like compiled binaries where I could see the function calls but not the source.

  The woman at the table's head had the focused stillness of someone who'd trained herself out of wasted movement. Forty, maybe, with the weathered look of someone who'd spent years making bad situations work. She was studying me with the particular quality of attention usually reserved for unexploded munitions.

  [???]

  Level: [ENCRYPTED]

  Status: ASSESSING

  Threat: UNKNOWN

  Encrypted. First encrypted nameplate I'd encountered.

  She knew what she was doing.

  "You're bleeding," she said.

  I touched my forehead. Came away with red. Apparently the wall explosion had involved some debris trajectory I hadn't tracked.

  "I'm aware. I'll add it to the list of problems." I looked around the cellar—the other people, the artifacts, the papers with diagrams I recognized as spell structures even without being able to read this world's notation. "Who are you people?"

  "That's the question we're asking you." She laced her fingers together on the table. "Pip."

  The boy practically vibrated. "She made a spear disappear," he said, as if delivering testimony. "No wand. No components. No verbal invocation. She looked at it and it was gone. And then—" he spread his hands wide, miming an explosion— "the wall."

  The five people at the table exchanged glances. Rapid, loaded glances, the kind that carried whole conversations between people who'd worked together long enough to have shorthand.

  The woman rose and approached me. Pulled a small crystal from her coat pocket—it caught the candlelight with an internal blue glow. She moved it through the air near my shoulder, watching it the way diagnosticians watch readouts.

  Then she stopped. Stared at the crystal. Looked at me. Looked at the crystal again.

  "How," she said carefully, "are you Class: NULL?"

  "Story of my life."

  "That isn't an answer."

  "It's the most accurate one I have." I held her gaze. "Your turn. Where the hell am I?"

  "Sanctum City." She pocketed the crystal, still watching me with that explosive-ordnance focus. "Capital of the Argent Concord. Seat of the Magistrate's court and home to the Covenant Regulatory Authority, which governs all licensed magical practice within six provinces."

  "Argent," I repeated, pulling the word apart. "As in silver. Sanctioned. By-the-book."

  "As in the only city in three kingdoms where unauthorized spellcasting is a capital offence."

  I let that sit for a moment. Capital offence. As in they execute people for it. As in I'd just—in a public market square, in front of several dozen witnesses, in the most rigidly law-governed city in the region—made a spear vanish and exploded a load-bearing wall.

  "Worst possible place for someone like you," the woman confirmed, as though reading the calculation off my face.

  "Right." I pressed the back of my hand against the cut on my forehead and thought about my options. The exits were one staircase and a coal chute. The encrypted nameplate suggested someone with actual capabilities. The table artifacts suggested resources. The fact that they'd rescued me rather than turned me in suggested, at minimum, aligned interests.

  "I need information," I said. "About how your magic system works. Technical documentation, ideally, but I'll take anything—spellbooks, regulatory texts, maintenance records."

  A ripple of reaction around the table. Amusement on one face, skepticism on two, and something sharpened to attention on the woman's.

  "You want documentation," she said.

  "I want to understand the architecture before I keep accidentally triggering undefined behavior."

  "You understand you just committed magical terrorism in front of fifty witnesses."

  "I understand I need to know the rules before I can break them efficiently." I paused. "Or follow them. I'm flexible on that point until I know more."

  The woman studied me for a long moment. The blue crystal was in her hand again, though she wasn't using it. Just holding it, the way people hold things when they're thinking through a decision that doesn't have a clean answer.

  "We call ourselves the Gray Zone," she said finally. "My name is Corvina. We are—loosely—people for whom the Covenant's regulation of magic is an inconvenient obstacle."

  "Hackers," I said.

  She tilted her head. "I don't know that word."

  "People who work outside the system's intended parameters. Who find gaps between what the rules say and what the rules can actually enforce." I looked around the table. "Amateur ones, if your security is anything to judge by—that cellar entrance has three magical tripwires I could disable in my sleep—but the intent is there."

  Silence. Then, from somewhere at the back of the table, a short laugh, quickly suppressed.

  Corvina's mouth did something that wasn't quite a smile. It was closer to the expression of someone who'd been looking for something specific in a very large haystack and had just put their hand on it.

  "Stay hidden," she said. "Teach us what you did. In exchange, we'll keep you off the Watch's manifest and answer your questions." A beat. "Or you can try your luck with the city above, where they're currently posting your description on every corner board in the Merchant Quarter."

  I thought about it for exactly as long as it deserved.

  "Show me your documentation first."

  Corvina reached across the table and slid a thick, leather-bound text toward me. The title on the cover was in script I couldn't read—but my Code Vision translated it instantly, the characters resolving into meaning the way packets resolve into data:

  Principles of Covenant Magic: A Practitioner's Introduction.

  I opened it. Looked at the first page.

  Saw the underlying code beneath every diagram, every explanation, every carefully illustrated spell structure.

  Saw seventeen distinct inefficiencies in the first three paragraphs alone.

  "You're going to fit right in," Corvina said.

  I was already reading.

  STATUS UPDATE — END OF CHAPTER 2

  ALEXANDRIA "HEX" VOLKOV

  Level: 1 [REGISTERED]

  Class: NULL [ACTIVE — UNDEFINED BEHAVIOR ENABLED]

  Location: GRAY ZONE SAFEHOUSE — SANCTUM CITY

  Status: STABLE [RECOVERING]

  Mana: 14/100 [REGENERATING]

  Trace Risk: 8% [CITY WATCH ACTIVE SEARCH — NO CONFIRMED LOCATION]

  Abilities:

  CODE VISION [PASSIVE] — Active

  DECOMPILE [ACTIVE — 20MP] — Unlocked, untested

  WEAPON_NULL — Improvised, unnamed, unrepeatable (for now)

  Current Objectives:

  [NEW] Read the manual

  [NEW] Don't get executed

  [NEW] Figure out what the hell is going on

  SYSTEM NOTE: User has made contact with unauthorized magic

  practitioners. Recommend monitoring for further unauthorized

  system interactions.

  SYSTEM NOTE: User is currently reading Covenant documentation

  at approximately 4x the standard comprehension rate.

  SYSTEM NOTE: This is either very good or very bad.

  SYSTEM NOTE: Probably both.