Higashi no Eden - Sezon 1 (2009)

Akira Takizawa wakes up naked outside the White House with no memories. He's got a gun and a cell phone. He doesn't remember the phone gives him access to ten billion yen and a woman who will grant any request. He doesn't even remember he's supposed to save Japan and will be murdered if he fails. Whatever he's tangled up in, Takizawa's in deep -- and that's not even scratching the surface.