It looks like a coincidence but they suspect that either GREED was up to something and the realm lord is hiding something from them about the use of the white ball to demon gods or the first sage is up to something for telling them.
In fact, they suspect that the realm lord or the first sage might be behind the creation of the white ephemeral ball. It might be a far-fetched suspicion, but it is valid when it involves the realm lord and the first sage. They refuse to judge those two with common sense.
The realm lord continued, "As for how to fuse worlds, there are two ways that I think are possible for Legion. The answer is Legion-7, and world sparks. There are two levels to the fusion of worlds that I think you can achieve. There is Power fusion and Law fusion. Power fusion is easy and safe. All you have to do is make Legion-7 the Will of the realm of all your worlds."