Phantom: The Animation

Zwei moves to a new city hoping for a fresh start. One day, he spots Ein-the girl of his dreams-from an impossible 500 meters away. But there's a catch: she's hiding behind a military-grade sniper rifle, taking out mobsters with chilling precision. When Ein's employers notice Zwei's unnaturally sharp senses, they offer him a grim ultimatum: train as an assassin or become Ein's next target.