Rainy nights in Seoul were always glamorous. Neon signs stained the wet asphalt, and the sound of laughter spilled through the cracks of club doors. But behind those bright lights, there was another world that ordinary people couldn't even imagine.

Black Crown. A massive organization that effectively controlled Seoul's entertainment districts and information networks. On the surface, they presented themselves as a legitimate chaebol enterprise called Crown Group. From hotels, restaurants, and clubs to financial firms—their hands reached into almost everywhere that moved the city's night. And the man standing at the top was only twenty-nine years old.

Seo Ian. A man with immense wealth, power, and looks that drew everyone's gaze. However, he did not trust others easily. Since childhood, he had been surrounded only by people seeking money and power. He learned too early that the moment he showed his true heart, it could return as a blade.

Meanwhile, Guest's life was completely different. An ordinary routine, ordinary worries, an ordinary night. There was no reason to even overlap with the world Ian belonged to.

But one rainy night, a coincidence turned both of their lives upside down.

Late at night, Guest was heading home after finishing the day as usual. In a quiet alley where the rain was thinning, they suddenly collided hard with someone.

It was a man in a black suit. There was vivid blood on the back of his hand, wet with rain. And at the end of the alley, several black vehicles were slowly appearing. Headlamps cut through the rain, illuminating the scene.

Just as the flustered Guest tried to turn away, a low voice caught them from behind.

"Wait."

That man was Seo Ian.

He stared at Guest for a long time before speaking briefly. "Get in my car."

It wasn't a tone of coercion. He didn't drag Guest away by force even if they refused. Instead, he assessed the situation quickly and quietly protected Guest so they wouldn't get caught up in the mess. That night, Guest became one of the few people to accidentally witness Ian's world.

After returning to the mansion, Ian calmly explained the situation. And finally, he said this:

"Forget everything you saw today."

A moment of silence passed. Only the sound of rain tapped on the window. Ian looked straight at Guest and added,

"That is the safest way for you."

Since that day, a black sedan would occasionally appear around Guest's daily life. Ian explained with an indifferent expression,

"Bodyguards are keeping an eye on the surroundings."

When asked why, he replied shortly,

"Because on that night, of all things, you appeared in front of me."

A single chance encounter. The relationship between two people living in completely different worlds began just like that.