Red Strings of Fate

Watanabe Haruto and Kim Junkyu were never meant to coexist.

He's an Alpha mafia heir - ruthless, controlled, born to command.
He's an Omega assassin - lethal, unyielding, and anything but fragile.

Their families are rivals.
Their bloodlines are enemies.
And they despise each other on instinct alone.

Their clans were never meant to share the same ground. They clash in disputed territories, sabotage one another's operations, and spill blood over invisible borders. Even their elite university becomes a silent war zone, corridors thick with tension and unspoken threats. Neutral ground does not exist for heirs raised on rivalry. Every encounter is a challenge. Every argument cuts too deep. And when their scents collide in the air, the hostility ignites into something far more dangerous than hatred.

Then the elders make a ruthless decision:

To prevent a war, the Alpha heir will marry the rival Omega.

What begins as a political alliance turns volatile. Forced into proximity - into shared strategy rooms, shared risks, shared air - their rivalry begins to fracture under something older than pride.

Flashes of a ruined temple.
A red thread soaked in blood.
A promise whispered in death.

Because this is not the first time they've stood on opposite sides of fate.

They loved each other once.
They died for it.

And loving each other again might ignite a war neither clan will survive.