Phantom: The Animation - S01

Zwei moves to a new city to start over. There he sees the girl of his dreams, Ein, for the very first time. Oddly, he spots her from 500 meters away, crouched behind a military issue sniper rifle, picking off mobsters. Before long, Zwei's strange alertness draws the attention of Ein's employers, and he's given a simple choice: train to become an assassin, or be marked as Ein's next target.