Hi there,
It's been a little while since I've posted here, but just recently I happened upon something a little interesting, if brief

.
I was watching the parody series "Sailor Moon Hell" (a parody of the live action Pretty Guardian Sailor Moon from the early 2000's) when I unexpectedly found two examples of nail growth.
The implication is one of a greater transformation (with a strong suggestion of evil conversion, if unfufilled), with Usagi's (Sailor Moon) nails becoming progressively longer and predatory.
Albeit brief, there are two such scenes.
The first is at 02:00 , and the second is at 04:39
The episode (part 2) is here for the interested
.
Thanks,
Alchemical Night.