Tista(2007)

Tista leads a dual life as the grim reaper of New York City and a university student studying to be a teacher. With extraordinary eyesight allowing her to make long-range shots with unrivaled accuracy, she has come to be feared by the criminal underground. Tista knows she’s doomed, but can her feelings for a young man she just met bring her back from the abyss? And what will she do if he finds out who she really is?

(Source: VIZ Media)