Nasuverse

Miyamoto Iori is attacked by a mysterious Rider, triggers his command spells, and accidentally summons Saber to save his life.

Iori and Saber explore Edo, establish a base, encounter other Master-Servant duos, and learn the rules of the Waxing Moon Ritual.

Alliances begin to form as Iori tracks down a rogue Servant and faces off against powerful factions trying to control Edo's ley lines.

The ritual intensifies with a massive, chaotic battle in the streets, forcing Iori to make desperate tactical moves against overwhelming enemy forces.

The story splits here. You must choose between chasing down the elusive Assassin or defending the strategic town of Akasaka.

The ritual nears its climax as major factions fall, secrets about the Holy Grail vessel are revealed, and you make the final choice determining your ending.

The ultimate showdown for the Waxing Moon. The final boss, the fate of Edo, and Iori's ultimate destiny change completely based on your chosen path.