Of course, this is just a small adjustment for them, and they may forget it soon. But why Angel is not affected by soul purification, this doubt appears in their hearts.
The only condition for not being affected by soul purification is that the quality of the soul is extremely high, probably comparable to that of a peak apprentice in the soul system, to be unaffected.
But is the quality of Angel’s soul so high?
They can't tell for sure.
But Angel often has out-of-body experiences, which shows that he has been training his soul, and maybe it is really possible.
Chapter completed!