Reincarnated in Fate/kaleid as Shirou Emiya

A lonely soul not remembering much of his life. Did he live too long? Did something happen to cause the lack of his memories? He doesn't know nor does he care anymore. The only thing left that he is sure of is that he must finish what he started, willingly or otherwise. He doesn't remember why he started or even when but that's the only constant thing in his 'life' if you even call it that. There was however one memory that stuck with him. A promise that he made to some girl. That promise made him keep going. He after all promised to 'do his best'. It however ended with a loud *BEEP* and the lights coming from the truck. (Cover does not belong to me.)