Defeating the ghost was immensely successful. The trio gained a lot of experience points and leveled up quickly.
Jackie and Amelia were close to breaking through to Rank 3 while Julien was close to being Rank 2.
After obtaining the soul stone, they entered the Haunted Hall of Hundred Altars.
Finding a rueful soul wasn't difficult. All they had to do was listen to every soul's blabbering until they found the right one.
Once found, Amelia used the items on her along with her skills to trap the soul into the soul stone.
The soul stone was then sacrificed and the trio heard a notification as a bright flash of light filled their vision.
[Floor 26's Main Quest #1 — Cleared!]
[Entering the Holy Lands…]
The sunless sky had an everlasting twilight.
The endless expanse of land possessed ruined cathedrals and worn-down shrines.