The man with the bow

(Y/N) (L/N) was an assasin with super enhanced powers who was originally sent to destroy S.H.I.E.L.D. Clint was sent to kill her but instead made a different call. Years later Clint joined the Avengers. You decided to leave and make a new name for yourself. One day Clint calls asking you to join the Avengers and this is where you had met him the arrogant brown eyed man who hated you or did he?

This does envolve endgame