Avengers Confidential: Black Widow & Punisher

In this anime film, Natasha Romanoff / Black Widow (Miyuki Sawashiro) and Frank Castle / The Punisher (Tessyo Genda) are paired up by Nick Fury to track down a black market weapons dealer named Cain, who has stolen S.H.I.E.L.D. technology. As they hunt Cain, they uncover a larger plot by the terrorist group Leviathan, led by Elihas Starr (Hiroki Touchi), who created a super-soldier serum. With the help of Hulk and S.H.I.E.L.D. agent Amadeus Cho, Widow and Punisher work together to stop Leviathan and save the world.