Substitute

“21 days. 7 hundred million won. 29 strangers. One unforgettable man.”

Yoon Ji-won never planned to become a substitute driver.

He never planned to be locked inside a building for 21 days with 29 dangerously attractive men.

And he definitely didn’t plan to have his world turned upside down by a smooth-talking younger guy who won’t leave him alone.

After a mysterious interview, Ji-won is thrown into a secretive, high-stakes project with an offer too tempting to refuse. The rules? Obey. Stay. Survive.

But when he meets “Number Three,” everything starts to unravel.

Cold stares. Lingering touches. A spark that turns into a fire he can't put out.

Is it destiny? Or just another trap?

For readers who crave intense power dynamics, isolated tension, and twisted attraction wrapped in a sleek, modern BL thriller.