The Darkness of the Capital and the Butler of Steel

The Darkness of the Capital and the Butler of Steel (王都の闇と鋼の執事) is a re-enactment game event in Mass for the Dead that was released on August 30, 2019 to September 9, 2019.

Background
This is a story you should have seen somewhere--. Behind Sebas's assault on the "Six Arms" hideout to save the kidnapped Tuare, a plan has begun in which the Demiurge has full control. This night, the flames of Gehenna attack the royal capital.

Trivia

 * The scenarios in this game event covers the events from Overlord Volume 06.