TheSmartOne

Lukas was just another struggling student on Earth, a chemistry major obsessed with flammable substances. But his fascination turned fatal when an experiment went wrong, engulfing him in flames and ending his life in an instant.

Yet, death was not the end.

Reborn in a world of swords and magic, Lukas finds himself as the sole heir of the mighty Ignis family—the legendary Children of Fire. But something is different. The flames that once consumed him have now become part of him, awakening a power unlike anything this world has seen.

As he navigates noble politics, rivalries, and the looming dangers of a vast and mysterious world, one question remains:

Will he rise as a beacon of power, or will his flames reduce everything—including himself—to ashes?

Reincarnated as a Duke’s Heir, But My Fire is Divine

A dimly lit laboratory, sterile white walls, and the faint hum of ventilation filled the air. Scattered across the steel workbenches were beakers, flasks, and intricate chemical apparatus—some familiar, others bordering on the esoteric. A faint acrid scent lingered, the unmistakable byproduct of repeated failed experiments.

At the center of it all, a young man stood motionless, his black curls damp with sweat beneath his protective goggles. His dark eyes fixated on the volatile liquid bubbling inside a conical flask, small tongues of blue and orange flames licking at the surface.

"Come on… just a little more," he muttered.

Lukas Moreau was, by all accounts, an unremarkable man. Born and raised in an orphanage, he had no name, no wealth, and no outstanding talent. Only sheer stubbornness had carried him through five grueling years at Paris University, where he pursued his passion—no, obsession—with combustion chemistry.

His thesis? The development of a highly reactive incendiary compound, one potent enough to ignite even the most fire-resistant materials. A breakthrough in controlled burning for deforestation projects, or, in the wrong hands, a potential weapon of mass destruction.

Before him, the concoction swirled—a mixture of chlorine trifluoride (ClF₃), one of the most dangerous oxidizers known to man, and an experimental gel-like napalm substitute.

A violent hiss escaped from the liquid as Lukas adjusted the heat. His breath caught. The solution began reacting unpredictably, tiny sparks dancing in the air.

"Five years… Five fucking years!" Lukas snarled, his patience snapping.

In a fit of frustration, he slammed his fist onto the bench, knocking over a nearby container. His mind barely registered the label before the contents splashed onto the still-warm solution.

The moment the unstable compound made contact, a terrifying realization dawned on Lukas.

The explosion erupted with the force of a concentrated firestorm, engulfing the laboratory in a blinding inferno. Flames roared around him, consuming his skin, his flesh—his very existence—until all that remained was the searing agony of fire.

As his consciousness faded, only a single thought echoed in his mind.

"If only I was good at something… just one thing…"

chapter 1 : Prologue