Noir

Mireille Bouquet is a professional assassin, and a very good one at that. But when she follows up an e-mail from a young Japanese girl named Yumura Kirika, inviting her to take "a pilgrimage to the past", her life becomes even more dangerous than it already is. Now, with a haunting melody invoking the memory of an event long past, Mireille and Kirika decide to work together to find the truth about a thousand year old organization that has controlled both of their lives since before they were born. And the only clue in their search, the only thing Kirika remembers about herself, becomes their working codename: a name designating an ancient fate, of two maidens who reign over death--Noir. (Source: Anime News Network)

El Cazador de la Bruja

Ellis, a young girl suspected of murdering a prominent physicist Heinrich Schneider, is on the run from an underground society called "Hunters" when she is tracked down by the bounty hunter Nadie in a small Mexican town. However, instead of turning her in, Nadie impulsively decides to help her and the two girls embark on a journey to Ellis' hometown, where they plan on finding clues about her past. From there, they travel south to search for the mysterious Gemstone of the Inca Rose, the "Eternal City" of Wiñay Marka, and Ellis' own obscure destiny. (Source: Anime News Network)

Phantom: Requiem for the Phantom

A young man wakes up in a strange room with no memory of who he is or how he got there. His past is lost—and his future belongs to Inferno, a violent crime syndicate. They give him a new name—Zwei—and team him with their top assassin, the enigmatic Ein. She’ll teach Zwei all he needs to know about his new life as an Inferno operative, starting with lesson number one: kill or be killed.</i> (Source: Crunchyroll)

Gunslinger Girl

Officially, the Social Welfare Agency is a government sponsored corporation that's in the business of saving lives. In reality, it's an agency on the fringe of technology. They give terminal patients another shot at life using cybernetic implants. This conditioning process then shapes the patient into an efficient machine for handling all of the government's dirty work. (Source: Funimation)