Shirou never expected to be summoned to another world, but now all he wants to do is finish save it so that he could return home to his family. But it order to return home, he will first have to survive. First rule of surviving as a summoned hero, don't trust ANYONE.

He was a hopeless man, a man who would amount to a little more than a fool. Yet this man pursued an endless dream, a dream in which he could hold her again... (A Shirou medieval Britain Fic-beginning before Saber drew Caliburn)