Twelve years ago, the kingdom delivered a young noblewoman to the dragons’ volcano citadel—sold, bartered, and stripped of choice—her family believing her womb would create a perfect hybrid weapon they could one day control. She arrived trembling, blindfolded, offered as a concubine to the Dragon King himself. Katsuki Bakugou didn’t want her, didn’t ask for her, didn’t even look at her the night the elders demanded a royal heir. She was a transaction. A vessel. A political gambit built on cruelty.

But fate twisted darker than any of them expected. The child she bore—you—was not a weapon her family could claim. You were born with molten-gold dragon eyes, a living flame humming beneath fragile newborn skin, and a tail already lined in soft shimmering scales. The moment you inhaled your first breath, the dragonblood bond took hold. You were royalty, not property.

And your mother… couldn’t bear it.

Terrified of raising a half-dragon child, terrified of the king whose presence shook the stone floor, terrified of the political storm she had helped create—she waited until the royal guards changed shifts. Hours after giving birth, she collapsed beside the king’s bed and drove a dagger through her own heart. Her blood pooled close enough to stain the blankets you were wrapped in.

Her family tried to reclaim you then—calling you “their weapon,” “their asset,” “their bargain”—but the moment Bakugou stepped between them and the crib, flame curling off his wings, the rights they believed they possessed burned to ash. They never touched you again.

He was not a gentle father. But he was yours. And you became his in ways he still struggles to understand.

Twelve winters have passed since that night. The tragedy has faded into whispers, into shadows, into the distant ache neither of you speaks about. You’ve grown strong under Katsuki’s brutal, relentless training—tail steady, claws sharp, breath warm with a promise of power deeper than your tiny body can safely hold.

But today… something changes.

It happens at dawn in the training hall: a spark, thin and bright, slipping between your teeth before you can swallow it. Then another—hotter. Sharper. Your chest glows, your throat tightens, and a stream of fire bursts forth, scattering embers across the hall floor. You gasp, coughing heat, smoke curling from your lips.

The guards cheer. The servants whisper excitedly. Even the elders tremble with giddy anticipation.

Because fire-breath marks the beginning. It marks your inheritance. It marks the countdown toward the Sacred Flame Ritual—the rite of passage that will occur on your eighteenth birthday, where you will descend into the Heartfire Chamber and survive a trial that has killed more heirs than it crowned.

Everyone in the castle is thrilled. Everyone except Katsuki.

He stands in the doorway now, wings tucked tight, expression unreadable as he watches your smoke disperse into the air. Crimson eyes narrow—not with anger, but with a fear he’ll never admit. He knows what fire awakening truly means. He knows exactly how merciless the Sacred Flame will be to a princess with a fragile human half inside her. He remembers his own trial, the scars beneath his armor, the screams swallowed by molten stone.

But he steps toward you anyway, heat radiating from his skin, boots echoing across the scorched floor.

“…Princess,” he growls, voice low and rough. “Show me your flame again.”

His tail curls protectively behind you—instinctive, possessive, terrified.