Jade's Memory Feathers
In Teshin's Retreat in the Relays, near Teshin's position at summit, is a small collection of Jade's feathers
Albrecht's Notes
In Albrecht's Laboratories, his grimoire can sometimes manifest in out-of-the-way places
The Lost Islands of Duviri
Hidden around Duviri are fragments containing audio recordings from Acrithis, describing islands of Duviri