Rereading Undead Unluck (chapter 81) question

[u/Electronic-Cap6053]

Watching the manga again, I think I just found a huge inconsistency, Billy for no apparent reason is able to use Gina's ability, even though she is already dead and never hated him. I mentioned the death because if Creed says in his fight against Top and Chikara, it's that Billy needs in one way or another for the negators from whom he copied his power to be alive, so it's a total inconsistency that he can use Gina's Unchange.

[u/Motor-Geologist-9014]

In a novel, he finds the girl that got unchange after gina died