One night, one fateful opportunity, and seven chosen people: the game known as the Holy Grail War begins. Saber (sword class), Lancer (lance class), Archer (archer class), Rider (rider class), Caster (mage class), Assassin (assassin class), Berserker (berserker class), and Ruler (arbiter class): the Holy Grail War includes all eight classes. Survive to the end and claim the Holy Grail, which can grant any wish.
(Note: It has a somewhat machine-translated feel, but overall it’s pretty good and worth reading. Some people may not know what Ruler means: they maintain the Holy Grail War so it can proceed normally, without interference. In this story, the Grail really can grant wishes, but who knows in what form.)