Julius Reed was not worried about Devlin.
Truly.
After consolidating all the forces in Swimming City, Devlin was indeed quite formidable.
But if that ragtag group actually encountered a powerful adversary, they would crumble into chaos in an instant.
When Julius Reed received the call from Grace River, he agreed to rescue the imperial princess. His condition was simple: the imperial bloodline had to help him with one matter in return.
This way, neither side owed the other.
In his own words, should it later be revealed that Grace River betrayed him, he could act without a shred of hesitation or guilt.
Fair and reasonable.
While in Swimming City, he merely uttered a few intimidating words to Devlin.
After that, he left behind a loudspeaker containing his own recorded voice and entered this place alone.
Compared to the Azure Emperor's ancient tomb, Devlin was truly insignificant.