This is a guide for the Ancient Secret side quest in Astria Ascending.
Obtained: Speak with Egyl at the Harmony Orchards in Chapter II
Rewards: Potion+ x3, 500 Lums
Talk to Nabu at the Harmonia Tower
Head to Floor 000 in Harmonia Tower to find Nabu and speak with her.
Go back to talk to Egyl in the Harmony Orchard
Take the train back to Harmony Orchard then speak with Egyl there.
Bring the ancient writings to Senna in Uptown.
Make your way to Uptown (east of Central Plaza) to find Senna and speak with her there.
Find the treasure at the Pisces Temple
The treasure can be found in the same room as the Anun Prayer Room fast travel point. There is a chest to the right hidden behind a tree. If you open it you’ll receive the Ancient Artifact.
Bring the artifact to Nabu at the Harmonia Tower
Head to Floor 000 of the Harmonia Tower and speak with Nabu there.
Go back to talk to Egyl in the Harmony Orchard
Return to Harmony Orchard and speak with Egyl to complete the quest.