Counterforce

Credit for the idea of fate superheroes goes to miss-atomic-bomb

The world is filled with mages. Evil ones. Those focused on just researching it. Then there's the counterforce. A group of people who either use magic and/or have abilities far beyond a human. They fight the fights that no normal human ever could and even some of the ones the humans could handle. Emiya Shirou has always dreamed of being a hero even knowing it to be futile and that he can't do everything by himself. Soon though he will be discovered by the fuyuki branch of the counterforce and gain his chance to become a hero of justice.

This will be using Heroic Spirit Emiya (though with a more ideal personality like shirou). Not the youthful and protagonist of stay night Emiya Shirou. It's also more of a secret agent/assassin story now