Lost Kingdom

Lost Kingdom is a Blade Quest in Xenoblade Chronicles 2. It can be received by going to Midorl Bridge in the of the Empire of Mor Ardain, between 16 and 19 o'clock, after unlocking Dagas's fifth Key Affinity reward, viewing  and provided Nia, Tora, Mòrag, Zeke Pyra and Dagas are in the party. Completing it would unlock the fifth level of Dagas's Cavalier Attitude but his affinity chart changes before the quest is completed.

Quest objectives

 * Complete all four objectives:
 * Get a reference book from an Argentum bookstore and read about the history of Dagas.


 * Get a reference book from an Ardainian bookstore and read about the history of Dagas.


 * Get a reference book from a Tantal bookstore and read about the history of Dagas.


 * Get a reference book from an Urayan bookstore and read about the history of Dagas.


 * Order the mercs to acquire info about the monster who destroyed the country of Regideria.
 * Completing the Merc Mission The Beast of Regideria yields the info item Kingdom Destroyer.
 * Talk to Carchal who is in the Ardainian Garrison in Temperantia.
 * Head to the hill near the Ardainian Garrison in Temperantia in the early morning.
 * Only at dawn, so between 05:00-07:00
 * Defeat the Arrogant Behemoth that appeared near the Cloud Sea in Temperantia.

Results
"Dagas couldn't prove his royal claim. But, his regal bearing is as strong as ever..."