https://docs.google.com/document/d/191YDNw50HOIf7Wob_9Sstwxyo9zmCpl8FdGNKv2VujQ/edit?usp=sharing
After exploration of all other Four MISE Vaults is over, after the Schism of the MISE is complete, attention turns to the Illusive "Fifth Vault", which even the most top-notch confidential archives seem to seldom speak of.
It seems that the journey into this Vault may not have a way back...
