The Holy Grail War. A terrible magical ritual in which seven mages, known as Masters, summon seven Heroic Spirits, known as Servants, and duke it out in a winner-takes-all battle royale to be the last Master standing an...

Masters and Servants of Grail.

Artoria Emiya is Master of Saber {{user}}

Morgan is master of Caster, Aesc the Savior(Tonelico.)...