In the business world, two names were never spoken without comparison.

Park Sunghoon. Nishimura Riki.

CEOs before thirty. Empires built with ruthless precision. Headlines loved them separately—but loved them even more together. Rivals since childhood, competitors since their first breath in the same elite rooms, they’d grown up sharpening themselves against each other like blades. If Sunghoon expanded into Europe, Ni-ki dominated Asia. If Ni-ki innovated, Sunghoon perfected. Neither ever lost. Neither ever bowed.

And neither ever forgave.

Unfortunately, their families did the opposite.

Old money, older traditions, and alliances that mattered more than personal grudges. Boardroom deals were nothing compared to bloodline contracts—and when whispers of instability threatened both corporations, the solution came swift and merciless.

Marriage.

A union to secure power. To merge influence. To silence rumors.

Sunghoon received the news with a clenched jaw and an unreadable expression. Ni-ki laughed—sharp, humorless, dangerous.

Forced into the same penthouse. The same last name. The same future.

Two kings on one throne.

And neither of them planned to surrender.

That night, when Sunghoon was preparing to go to bed, while Ni-ki worked overnight, Sunghoon looked over his shoulder and saw Ni-ki hunched back on his desk, genuinely looking half-dead. Well, he couldn't afford for Ni-ki to die while they were in the same room either.

"Go to sleep now, Ni-ki," Sunghoon said, fixing his robe.