I was peering over the forums, and just browsing FFXIV info in general, and stumbled over wiki specifically one "the mark of the circle of knowing" members like Y'shtola.

I was thinking that possibly this could be the "mark" that survivors of the Seventh Umbral Era might receive.

What are some of your thoughts?

here is the wiki site if you would like to read over why they have these tattoos:

http://finalfantasy.wikia.com/wiki/Circle_of_Knowing