Ye Kai was a bit surprised with how open Wu Bai was, and he didn't expect this talk to go this easy. From the start, he wanted to control Wu Bai through his system, but the system told him he couldn't do that since Wu Bai had a very powerful lion spirit.
This powerful lion spirit was the beast companion of the founder of the Dark Rigel Kingdom, Raftaar.
When Martial Art Competition started, Shao Ren brought Ye Kai to meet Wu Bai, and at that time, Wu Bai showed him a lion spirit.
Since his plan of controlling Wu Bai failed, he decided to kill Wu Bai and control the 4th prince, then control Kingdom through him; however, again system spoke that killing Wu Bai was impossible. Since Wu Bai had a spirit with Spiritual Realm powers, there was no way for him to kill Wu Bai.
Because of this reason, Ye Kai decided to join hands with Wu Bai and decided to make him king and then think of a way to make Wu Bai his underling.
