Although this part of the plot was a cutscene after making a choice and the Void Sovereigns' health bars weren't visible, the three Void Sovereigns suffered injuries that couldn't be healed for eternity according to what was mentioned in the epilogue. William estimated that if They stayed in Currere for a few more minutes, it wouldn't be a problem for Them to be beaten to death by the incarnation of the Holy Spirit.
However, the problem was the price.
To prevent himself from turning into a new disaster after using this power that mortals couldn't control, the protagonist in the eclipse ending kept burning his soul to fight. After this battle ended, the protagonist entered a vegetative state that didn't react to the outside world because his soul had been burned out.
It could only be said that this was reasonable as an internecine method.
