Chapter 522: Chapter 522: Is someone following?

"Abyss, something else related to the Abyss..." Song Jian frowned, looking at the battered piece of parchment in his hand.

At that moment, Song Jian's finger touched a section of this "oath of allegiance", and a faint black aura suddenly began to emit from it. The emanation was so weak that even Song Jian did not notice.

System: You have obtained a mission item, the Oath of Allegiance from the Dungeon Zombie Overlord. You will receive a hidden mission, The Secret of the Dungeon Zombie Overlord. Do you accept?

"Mission item, hidden mission?" Song Jian was taken aback, but quickly chose to accept.

System: You have accepted the hidden mission, The Secret of the Dungeon Zombie Overlord. Please deliver this "Oath of Allegiance from the Dungeon Zombie Overlord" to the Hellish Arachnid, Wenrui Si.

Who is the Hellish Arachnid Wenrui Si? Where is he? The mission didn't specify, and Song Jian didn't even know if they were in Doomsday City. How was he supposed to deliver this oath?