Fighting Against An Overlord Plane Expert

Reynolds, who was inside the cave sensed the unrest outside, opened his eyes. When he saw Grey sitting calmly in front of the cave, he closed his eyes once again. 

He was already very close to breaking through to the Fifth stage of the Origin Plane, but there was still just barely over half of the lightning tree essence left. If he wanted to completely refine it, it would take another day or two. 

'I'll need to hurry up,' He said to himself. 

He could tell that whoever Grey was about to face was very powerful, and the only reason he wasn't escaping was because of him. 

Outside the cave. 

Grey was slowly starting to merge his essence beads together. He was quite expectant of how strong he would become.