Originally Posted by
Archwizard
First off, Esuna doesn't have the same color animation as Vercure/Benefic. Esuna has a much deeper, richer shade of unambiguous indigo, while Vercure/Benefic use what appears to be a desaturated mixture of colors (silver, blue, purple).
Second, I checked in Ruby Sea against the Red Kojin enemies and Water Sprites, all of whom use the aquamarine swirl when casting Water that I described, which matches oGCDs.
I'll check Sahagin when I get home but since you didn't see Esuna as being different it's not looking good for ya.