He prayed to the Throne of Heroes, but the only one who answered was himself. The Fifth Holy Grail War had just begun, yet Shirou Emiya received replies from his counterparts in every parallel world.
The Fate route: the Soulmate of the King of Knights.
The UBW route: Rin Tohsaka's lover, and his own rival.
The HF route: Sakura's one and only Hero of Justice.
Heroic Spirit EMIYA: Guardian of the Counter Force.
Heroic Spirit EMIYA Alter: the sneering Iron Heart, his evil nemesis.
Sakutsuki Shirou: the older brother who abandoned the world for Miyu.
Senji Muramasa: the ultimate blade, severing the bonds of fate and karma, cause and effect.
With all these versions of himself answering his call, Shirou Emiya is going to break through the Holy Grail War this time and reach an ending where everyone can smile!