Fate/Grand Order: Moonlight/Lostroom

Chaldea contains a forgotten chamber known as the Lostroom, a place said to show what has been lost, or those who have lost something themselves. In the quiet after humanity's restoration, Ritsuka Fujimaru and Mash Kyrielight stand at the edge of an uncertain future while unsettling visions gather around that sealed space.

Dreams, memories, and possible realities overlap inside the room, hinting that Chaldea's victory has not ended every threat. What appears there becomes an omen of a new crisis waiting beyond the Singularities they have already survived.