Fate/stay night

Ten years ago in Fuyuki City, a young boy was caught in a massive inferno that incinerated his parents and consumed a large portion of the city; as he was dying, a man saves him. Now this boy, Shirou Emiya, is an amateur mechanic who attends school at Homurabara Gakuen. Shirou also seems to be quite a bit of a magician but his abilities are no where near the level of his late father's. Meanwhile, the city is beginning to be plagued by gas spills and homicides and with Shirou's sense of justice starts to kick in, what could someone like him possibly do?

Rin seems to have problem with the servant she has and the fact that she wasn't powerful enough to call forth a more powerful servant. Back at school, Shirou has been asked by Ayako to keep an eye on Sakura's brother Shinji Matou, who's been fooling about in archery club. In the end Shinji takes advantage of Shirou's helpful nature and makes him take care of the archery club's dojo. However while Shirou's cleaning head goes out to inspect a noise, only to witness a fight between two servants.

Shirou is still lost and incredibly confused, after seeing an elegant warrior with the name Saber appear before him and choosing him as her Master. Shirou isn't even given a chance to get to grips of the situation before Saber continues her fight with Lancer, but before things get too serious Lancer walks off. Saber then chooses to pick a fight with Rin and her servant, but Saber reluctantly accepts Shirou's order to stop. Shirou then learns of the Holy Grail War, which he has gotten himself into.