From the memories of the Demon Kings, there were a few groups actively moving in the Lost World beside them. Beings from the World of Cultivation were one of the more powerful ones that matched the forces of demons.
They wouldn't normally be attacking underwater cities like this as Atlanteans and Merfolk were a power to fear on their own, so the sight playing out in front of me was something interesting to see.
The city under siege should be the underwater City of Aquicadis. At the forefront of their defense, multiple Neon Commanders who signified LEGENDARY rank could be seen, as well as a Gold Commander who was a rank higher.
The fight seemed to be at a standstill as the two MYTHICAL figures of both sides let out wild pressure that clashed against each other, the LEGENDARY figures below being the ones moving actively.