I sort of do it with my elezen lady, but moreso that she's Sharlayan and feels that people shouldn't have accesses to these tomes, and rather takes care of them herself then seeing random adventurers do it. Knowledge in the wrong hands is her motivation, not so much killing voidsent ultimately. Anyhow, those books might be something to work with for your character as well, even if their motivation is different?
There's a heap of them to be found in game and on Gamerscape (although it's super wonky) and XIVDB regarding them.
https://ffxiv.gamerescape.com/wiki/Necrologos
http://xivdb.com/?search=necrologos&filt...ljdD1vZmY=
There's a heap of them to be found in game and on Gamerscape (although it's super wonky) and XIVDB regarding them.
https://ffxiv.gamerescape.com/wiki/Necrologos
http://xivdb.com/?search=necrologos&filt...ljdD1vZmY=