V1 P1, 81%
"Anyway, speaking of family, Vanitas had two little sisters—twins, in fact. They both had opposite personalities..."
Very minor, but 'both' seems superfluous (can't have just one with an opposite personality, but the other doesn't)
P3, 4%
"If one were truly skilled, it was also possible to transform into animals, monsters, or inorganic matter—but only few could do that.
'but only few' ->
'but only a few'
or 'but only few'
71% “To that end, I’m ready to pay any price,” I declared. Then after a short pause, I said, “ Christina.”
Extra space in front of 'Christina'
P4, 15%
"Being slaves, I never shared a meal with them."
Stared at this a little, but I can no longer tell if this is currently fine as is or not. If not:
'I had never shared...'
or 'I never shared meals...'
50%
"Shuka was a woman who looked like in her early twenties"
Could just be phrasing I'm not used to, otherwise:
'who looked like she was in her early twenties'
or 'who looked to be in her early twenties'
P5, 92%
"Ms. Ashley was such a worrier. We [had] had this conversation multiple times already."