Fate/Prima (Wattpad Holy Grail War)

In the ancient city of Fuyuki lies an ancient city home to one deadliest rituals: the war of the Holy Grail. In this proxy war, seven magi are pit against each other in a battle royale to win the prized Holy Grail, an ultimate wishing device that is said to be capable of granting any wish or desire. To win, such masters are paired with some of the greatest and deadliest heroes across all worlds, times and space to compete, bound to kill another in a battle to the death. These heroes are divided into seven classes which most represent their style of combat: Lancer, Archer, Saber, Berserker, Rider, Caster, and Assassin.

A fan story based on the Fate/Stay Night series, basically as a replacement for the Death Battle series.

Fate/Stay Night belongs to TYPE-MOON and its author Kinoko Nasu and artist Takashi Takeuchi