Side: Templar (Vestment Cave)

From the world map, use the Rubadub and Auto-Pilot to Miasma Woods in the Harena region. If you haven't been there, quick travel to Ancheim and head east towards the Yulyana region.

Locate Vestment Cave at the west-most edge of the Yulyana region, halfway down. Position the Rubadub south of the cave to land.

Floor 1F: From the entrance, head north-east to a junction. Take the eastward path across stepping stones to find a Cannelle in the south-east corner.

Head west to another junction. Continue west to the south-west corner for Dried Remora.

Go north to a third junction. Continue north and then east around the corner.

At the next junction, which converges, proceed to find a chest containing an X-Potion.

Return to the third junction and head west to find the stairs down.

Floor B1: Travel south, ignoring the eastward passage, to pick up an Enopu Mushroom.

Double back and head east. At the junction, continue east to find a chest with a Light Curtain.

Head south from the junction. Ignore the stairs going down and continue south to find a chest with an Earth Mallet.

Make your way east to a second set of stairs and descend.

On the isolated part of Floor B2, head west to find a chest containing a Failnaught.

Return upstairs and go down the first set of stairs towards the center.

Floor B2: Head east to a dead end and find a Spider’s Web.

Go west, then south at the next junction. Pick up the Magnifying Glass and continue north.

At the three-way split, heading south-east yields Monoceros Flakes. Heading north-east leads to a chest with a Holy Lance.

Continue north-west. Explore the southward path for a chest containing an Elixir.

Descend the stairs in the north-west corner.

Floor B3: Speak with the Adventurer for pre-battle preparations (rest, restock, save).

Proceed north to confront the Grand Marshal. Unequip the Grand Marshal’s Sword and Grand Marshal’s Shield if equipped.

Boss: Braev the Templar: Braev (Lv. 60, 30000 HP, Weak to Dark) and his minions (Lv. 60, 7200 HP Guardsman/Pike Guard, 6000 HP Mage Guard, Weak to Lightning) will attack. Focus on defeating the minions quickly. Braev uses Radiant Blast and Giant Slayer. Consider physical defense buffs or abilities like Utsusemi or Undo Action. Winter Storm can stop his BP recovery. Minions use Carotid Slash, Execution, First Spear, Blizzaga, and Sleep. Minions are weak to lightning and susceptible to Ripper and Doujiri-Yasutsuna. Once Braev is alone, use dark-based spells or humanoid-slaying weapons. Hawkeye's Condor or Valkyrie's Pierce Default can counter his Defaulting. Be cautious when his HP is below half, as he will Brave twice. He will recover all HP twice before being defeated.

Afterwards: Braev will give Edea the Grand Marshal’s Staff. You will be transported to Yulyana Needleworks.

Explore Yulyana Needleworks: Speak to the Adventurer's fox to rest or go to the bedroom to the east. Check the desk behind Braev for a Star Corslet.

Go down the steps and head west. Find a Cat Feather in the corner below the window.

Go to the south-east corner past the bridge to find another Spider’s Web.

Leave via the wooden bridge to the south.