"Arrogant, just like your father," Joash stated after staring at William for some time. "But, I can see that you have the strength to back it up. Have you really fought against a Pseudo-God?"
William nodded. "I did."
"And, who won?"
"I think it turned out to be a draw."
The Half-Elf had definitely dealt Apophis with a killing blow, but after the explosion, he wasn't able to see whether he succeeded in slaying the Pseudo-God or not.
When he asked Optimus this question, the System stated that the possibility of Apophis surviving the attack was high. However, the Pseudo-God definitely suffered grievous injuries and would not dare to show his face in front of William for a very long time.
Optimus added that if Apophis really died, William would have definitely gained a title that proved that he had slain a God, and that title was none other than "God Slayer".