Fate/stay night(2006)

Shirou Emiya loses his parents in a fire when he was a child, and is later adopted by a male wizard. Although he respects his godfather, Kiritsugu Emiya, and wants to be a friend of justice, his powers are limited and he cannot become a powerful wizard like his father. But one important day changes these things. He suddenly enters the holy cup war and is forced to summon a female servant named Saber (sharp sword) to protect himself. This war is a war that has been going on and on the same cloth that all the witches are looking for and whoever gets it can fulfill one of his wishes. There are seven masters here who can summon their own servants from different classes (grades), which include: Saber (sharp sword) - Archer (shooter) - Rider (rider) - Berserker (crazy) - Lancer (spearer/spear thrower) - Caster (thrower of small wheels) and Assassin (assassin). These servants must keep their names secret so that their weaknesses are not revealed to their enemies. The story revolves around Shirou and this holy grail war...