List of quests (Cold Steel IV)/Finale/The Holy Beast's Trial

The Holy Beast's Trial (大地の聖獣の試練) is a hidden quest that occurs during of .

Background
The quest is available on September 1st. This quest is only available when the following quests are completed:
 * The Alster Harvest Festival
 * Saving Officer Alan
 * Einhel Keep Monster
 * Missing Person Report
 * Showdown of the Decade
 * Ghosts of Hamel

All five Lost Arts need to be collected as well.

Completing this quest is necessary to see the True Ending of.

Walkthrough

 * 1) After doing the last quest, return to the Courageous II and Toval Randonneur will give a call.
 * 2) Travel to Auros Coastal Road 2 and meet up with Toval near a newly appeared shrine.
 * 3) Head into the shrine and go the deepest part to trigger an event.
 * 4) After the event, defeat the Holy Beast of Earth. After the events, the quest will be completed.

Notebook

 * It's time to get ourselves together and head to the shrine. Toval, Beryl, and KeA have identified some kind of spiritual presence connected to Aidios. So far, all we have are three hints about its whereabouts--'a sacred shrine,' 'the southwest of Lamare,' and a 'seaside grotto.'
 * Encountered Argres, the Holy Beast of Earth, in the Sanctus Shrine. After completing his trial, he left us with the last of his power, which he called the 'Earthen Prison.' Exactly what this power is and how we're supposed to use it remains a mystery.

Trivia

 * If the quest isn't finished before arriving at Tuatha De Danann, then the quest can still be completed after getting the normal ending for the game. After getting it, there will be a portal in Tuatha De Danann that leads straight to the shrine with a voice telling the party to complete the quest.