The Beast Deity said before the moment all seven treasures were assembled, the doors of time and space would open.
What if Gu Mengmeng wanted to leave them and go over to Snake then?
Perhaps he had been so wretched in front of Snake before that even as a Wolf King now, he still had zero confidence if he were to face Snake.
The words "so weak" uttered by Snake as he carried Gu Mengmeng back was like a knife embedded in his heart. It forced him to continuously strive to become evermore powerful. Even though Elvis was now so powerful that he could look down on the entire Beast World, he would never get the chance to win Snake.
If he lost to Snake again when the seven treasures were assembled…
That was the real reason why he and Lea were so fretful.
And this was something he and Lea would never tell Gu Mengmeng.