Vol. 1Mayuri and the Two Wars
Mayuri shaped the Holy Grail War in Fuyuki, won the Grail, and later guarded it in Singularity F before joining Chaldea. The story then shifted to the Great Holy Grail War, where Mukuro Hoshimiya joined the Black Faction and became Jeanne’s greatest concern.
Chapters 1–1004 arcs