"Not participating in the battle? Who do you think you're looking down on?"
William is protective, but after the Cosmic Entity's explanation, he was actually a bit provoked.
There are other universes, and it sounds like more than just two or three, which slightly piqued William's interest.
Regardless of how much truth or falsehood was in what the Cosmic Entity said, having Alice compete with guardians of the Cosmic Entity from other universes sounded like a great idea.
"Hmm?" The Cosmic Entity was stunned.
Why doesn't this person play by the rules?
"Alright! If there's nothing else, I'll come back to beat you up when I'm free," William said, and then disappeared.
He had noticed that within this black hole, there was actually a trace of his own aura.
Without a doubt, that entity he expelled from his body was also inside.