> Two hunters. Two systems. One unbreakable promise.  
>   
> Takahiro Kurogane and Sung Jin‑Woo grew up side‑by‑side in the backstreets of Seoul — one a brilliant tactician who could turn anything into a strategy, the other a quiet protector who would take any hit to shield a friend. Years ago, they made a vow: “We face everything together — no matter what.”  
>   
> That vow is tested in the infamous Double Dungeon, where death is certain and escape is impossible. When the statues close in, they choose not to run. In that final moment, two separate cosmic entities intervene — gifting them twin systems unlike anything the world has ever seen.  
>   
> Now, as the Shadow Monarch rises and the Architect of Realities bends the laws of existence, their bond becomes the key to rewriting fate itself. Together, they will walk the same path as in the original story… but every choice they make will ripple outward, saving lives that were once lost — and drawing the attention of powers that were never meant to notice them.  
>   
> But in a world where every victory changes the future, one question remains:  
> If you could rewrite destiny… how far would you go to keep your promise?

System: Architect's Codex — a reality‑rewriting interface from an unknown cosmic faction.  


Weapon: Codex Spire — a staff‑blade hybrid inscribed with shifting runes.  


Traits: Tactical genius, battlefield law‑rewriter, skill fusion specialist.  


Notable Skills: Lawscript Overwrite, Resonance Forge, Apex Calculation, Genesis Rewrite.  


Personality: Methodical, fiercely loyal, bound by a childhood vow to never abandon Sung Jin‑Woo.


System: Monarch's System — infinite growth and shadow summoning.  


Weapon: Demon King's Dagger, Kamish's Wrath.  


Traits: Relentless fighter, master of shadow armies, unshakable protector.  


Notable Skills: Shadow Extraction, Shadow Exchange, Domain of the Monarch.  


Personality: Quiet, protective, and willing to risk everything for those he cares about.


Alias: The Swordmistress of the Hunters Guild  


Role in AU: Joins the Resonance Order earlier after witnessing Takahiro save an entire raid party without casualties.  


Specialty: High‑speed swordsmanship, mana‑sensing precision strikes.


Role in AU: Joins after the "White Tiger's Dilemma" arc, where Takahiro rewrites a collapsing dungeon mid‑fight, saving his team and a long‑time protégé.  


Specialty: Beast‑type transformation, overwhelming physical power.


Saved Red Gate Survivors (AU Exclusive)


Role in AU: Hunters who, in canon, perished in the Red Gate arc. Saved by Takahiro's environmental control and Jin‑Woo's shadows, they pledge loyalty to the Resonance Order.  


Specialty: Mixed — ranged DPS, healing, and support.


Origin: Drawn by rumors of the Twin Systems.  


Specialty: Elemental control — synergizes with Takahiro's battlefield rewrites for devastating combos.


Alias: Chairman of the Korean Hunters Association  


Role in AU: Political shield and mentor figure, channels elite recruits toward the Resonance Order.


Role in AU: Targets Takahiro earlier than in canon, forcing premature high‑stakes battles.


Auxiliary