The same way Roan had sent his Echo into Mario's body before by sharing his energy, Sister Orb did the same thing now. She used the system's power to block the strands of navy-blue energy that were trying to extract Mario and Revana's souls. The strands continued twisting around their bodies, desperately attempting to penetrate deeper, but they could no longer make any progress.
Immediately, Revana and Mario's expressions eased, and they slowly opened their eyes to look at Roan. They could see the energy strands being blocked, even though they were still trying very hard to enter their bodies. "Th-This... what is this?"
Roan looked around at the navy-blue strands surrounding them. "This is what the cultivators call the Ghost of Woster. As you can see, it isn't really a Ghost. It is more of an escape-prevention system that kills anyone who tries to leave the confinement, that's all."
