Fate/Grand Order: Mortalis:Stella

A mobile game adaptation follows two recruits, Mash Kyrielight and Ritsuka Fujimaru, as they work with the Chaldea Security Organization in 2016. Chaldea uses time travel to fix disruptions in history that could endanger humanity's future. When a new threat emerges, the pair leads a mission to retrieve the Holy Grail and prevent human extinction. The manga covers select singularities from the first part of the game.