Black Cat

Black Cat was originally a Japanese Shonen Jump manga series written by Kentaro Yabuki. The series was adapted into a twenty-four episode anime series by Gonzo studio. It debuted in Japan on the anime satellite television network Animax and the terrestrial Tokyo Broadcasting System network on October 6, 2005.

Viz Media licensed the manga series for English-language publication in North America and as of May 2009, have released all 20 volumes of the series. Funimation Entertainment licensed the anime series for North American broadcast where it was broadcast on the Funimation Channel. The series was later released on six DVD compilations, as well as a Complete Series boxed set.

Plot
Chronos, an organization bent on world peace, rules one third of the world's economy through underground control of almost every kind of business. There are special elite assassins with Orichalcum-made weapons called the Chrono Numbers who work for Chronos.

When the thirteenth Chrono Number Train Heartnet, also known as Black Cat, meets a Sweeper named Saya Minatsuki, she opens his eyes and helps him see that he has choices as whether to kill his victims or not. He leaves Chronos but Creed Diskenth resents the way that Saya changes the elite assassin's life, and murders her.

Two years later, Train is a Sweeper and traveling with his partners Sven Vollfied and Eve as the story follows their adventures of catching bounties and protecting one another, as Train holds a violent grudge against Creed for killing Saya, wanting revenge for her death by taking Creed's life.