When physicist Ren Kurogane dies in an experiment gone wrong, he awakens in another reality—reborn as a lab subject in a world of heroes and hidden power. His escape triggers a phenomenon no science can explain: Quantum Mana, an energy that lets him slip between worlds.

From New York’s secret sorcerers to the magic of Camelot and the spell craft of other realms, Ren learns to master his unstable gift—turning theory into sorcery and reason into power. Each world teaches him something new, yet every leap risks unraveling the fabric of existence itself.

To survive, he must become what no one has ever been before: a mage of quantum origin—the first and only Quantum Mage.

All characters and worlds from existing franchises belong to their respective creators. This is a transformative, non-commercial work of fiction.

PS: It is my first time writing any form of work and English is not my first language so expect some error, will improve as I move forward.

PS: At this point in story it is so far a non-harem fic and I am planning to keep it that way.

Ps: the image in cover is generated with AI

We'll start describing characters as we reintroduce or focus on them in future chapters. Here's a base visual bible to keep consistency:


Appearance: Lean, wiry build; black hair with a subtle bluish sheen under light; pale skin from lab confinement; intelligent gray eyes that occasionally flicker with faint azure when channeling mana.


Style: Simple brown tunic and dark cloak (gifted by Gaius), layered with reinforced leather gloves (his makeshift mana regulators). Keeps a small notebook tied to his belt.


Demeanor: Calm, observant, speaks in measured tones; scientific curiosity laced with emotional restraint.


Character Visual & Style Details