fate/zero

Fate/Zero is a novel set a decade before fate/stay night, written by Urobuchi Gen of Nitro+ in collaboration with type-moon and illustrated by takeuchi takashi. It chronicles the brutal Fourth Holy Grail War, centered on the mercenary mage emiya kiritsugu and his Servant Saber. Studio ufotable adapted it into a highly acclaimed anime in 2011 and 2012.