The city of Seoul never slept.

Neither did Kim Aiden.

At just twenty-nine years old, he was already the ruthless CEO of Mireon Group — a company powerful enough to make headlines with a single decision. Employees feared him. Investors respected him. The media called him cold, untouchable, perfect.

And maybe he was.

Until her.

Kim Areum was everything Kim Aiden hated: stubborn, emotional, reckless… and impossible to control.

The first time they met, she challenged him in front of the entire executive board.

Everyone expected her to be fired.

Instead, Kim Aiden stared at her silently before saying:

“From today onward, you'll work directly under me.”

Those words changed everything.

Late nights at the office turned into silent tension. Arguments became lingering eye contact. Cold conversations became dangerous feelings neither of them wanted to admit.

But beneath Kim Aiden's calm expression was a man carrying scars no one could see.

And beneath Areum's stubborn smile was someone terrified of being abandoned again.

In a world filled with power, pressure, and hidden loneliness, two people who couldn't stand each other slowly became the only place the other felt safe.

Sometimes love doesn't begin with butterflies.

Sometimes…

it begins with war.