Circa 300 AD

Battle in the city as of the forests of the night; the Millennium Castle.​
There occurred a violent clash between Crimson Moon and the Wizard Marshal Zelretch ... it is said.​

Circa 300~500 AD

Upon the continent, in the countries of Western Europe, the influence of the Holy Church expands.​
The Thaumaturgical Association declines.​
The ravages of the battle against Crimson Moon are vast.​
The winter of thaumaturgy.​
The thaumaturgical cities established by the Association are in the dispute against the Holy Church shut down one by one.​
On account that Crimson Moon was annihilated, Gransurg Blackmore does in the midst of despair accept annihilation.​

Lord El-Melloi II Case Files: Clock Tower Chronology