Fate/Grand Order: Cosmos in the Lostbelt - Prologue

The prologue chapter of Cosmos in the Lostbelt. Chaldea begins to slow down their operations after resolving all the remaining Singularities. When their new director Goredolf Musik arrives with an entourage of guests, the organization and its staff undergo a thorough investigation, leaving the fate of Chaldea up in the air.

With the disappearance of the Singularities, the threat to mankind has passed. Rayshift use has been suspended, and Chaldea's Heroic Spirit Summoning System has been shut down. One by one, Chaldea's Servants have departed, leaving only Leonardo da Vinci as acting director. The morning after the Christmas adventure, Master wanders the hallways alone, as if to make the most of these last few days at Chaldea...