None of the creatures living on the bottom few floors had been weaker than Kim Jin-Woo. How could he have penetrated their rock-hard skin with only fists and the bone of an unknown creature?

Nonetheless, he had survived through all those ordeals and passed through countless labyrinths to exit the Underworld. It was thanks to a special ability called ‘Weakness Detection’ that he had mastered while being raised on the deepest floor.

Upon activating the skill, Kim Jin-Woo’s eyes turned blue and swiftly scanned the drakan’s body. A red line formed along the path of his gaze. It twisted and tangled in midair until it enveloped the drakan’s scaly body.

This was the effect of ‘Weakness Detection’.

“Kyaaak!” The drakan let out a shriek and threw punches at Kim Jin-Woo.

Kim Jin-Woo bent down to evade the attacks while his gaze continued to trail after the drakan. Meanwhile, the red line continued to spread across the drakan’s body...