“How did you know?”

At the Shadow King’s question, Gu Cheolwoon met his gaze. His eyes were like a bottomless abyss, devoid of light or reflection.

Gu Cheolwoon stared silently into those eyes before he spoke.

“It was impossible not to know.”

The Poison King’s letter, containing news of his son’s predicament, had reached the Gu family.

It was unthinkable that the Shadow King hadn’t been involved in its delivery.

When he thought about it, the reasoning was straightforward.

The distance between Sichuan and Shanxi was by no means short.

For someone like Gu Cheolwoon, it might be possible to …