Battling A Ninth Stage Elemental Venerable

Grey didn't kill the people he encountered. He might want their items, but he didn't want to end their lives. Losing their storage rings was enough punishment for them. Only those who came with clear killing intent would be killed. 

He only encountered three people, and they only wanted to take the treasure he was rewarded by the voice. After beating them, he took their rings and let them be. 

Almost one hour later, Grey stopped by a riverbank. 

'Someone's following you.' Void said telepathically. 

Grey was a bit astonished when he heard this, he had been very careful and had been sensing his environment, but he had not sensed the presence of anyone. He knew Void would never lie to him about something like this, so he was certain that someone with adept hiding skill had been following him, hopefully waiting for the perfect time to attack. 

'Strength?' He asked.