There were millions of islands here, all of them together were named the Myriad Devil Islands, and each island was helmed by either an extremely powerful devil sect or jointly governed by several equal powers.
That was a place where the strongest devil cultivators in the immortal realms gathered. There were countless devil sects and some of their peak devil emperors were so powerful that even the peak emperors of the immortal realms could only return in low spirits from being forced back.
Although the Myriad Devil Island was extremely chaotic and the people in there killed and plundered each other daily, they would never allow immortal emperor characters to step into their sanctuary. This was the order given by the master of the Myriad Devil Island.