C917 Sneaking into the Demonic Lord's Room

"Understood. Because tomorrow is the day the operation will start, Demonic Alligator and Demonic Globefish have already entered our sea area and are resting in the underground palace. They came instead with about two million Siren.

Amongst them, there are twenty of the Demon Emperor ranked Siren. "

"Do you have any way to sneak in? I want to get the Soul Nurturing Stones