Morrigan and Heimdall returned from their mission earlier than expected. It seemed they were both in a hurry, seeing as they were completely out of breath.

“Considering the importance of the object, we quickened our pace.” With a weary look, Morrigan handed over a large down gem in her possession.

“Indeed. Something like this will definitely attract unwanted attention.” Kim Jin-Woo shuddered at the presence of such a mighty object. It was little wonder that even such mighty summons had overextended themselves for this item. Needless to say, what was contained inside the down gem was a rare treasure in the Underworld.

Even if it had been empty inside, a highest-quality down gem alone would make most Underworld beings salivate. But inside it was a Labyrinth Core that had been active until recently. It was a Labyrinth Core that belonged to not just any ordinary labyrinth, but a Duke-level labyrinth.

[Crystal of Sin (Labyrinth Core of a masterless labyrinth)]

[The ‘Heart of Sin’ is a great artifact that governs a Level 17 labyrinth, supporting the prison of sinners that held all forms of unclean and sinful entities. Although it has lost its owner and is currently on standby, it is ready to be reactivated at any time.]

It had been a while since the Naga’s Labyrinth failed to use the Sea Dragon’s Heart and...