I Picked Up a Prince
Saki Morimi has just graduated from college and is visiting Washington D.C.. When she gets into trouble with the police, a mysterious Japanese boy helps her out. The boy appears to have no memory and is completely naked, carrying only a gun and a cell phone. Juiz, who claims to be his concierge tells him over the phone that his memory was wiped. Later he takes on the identity Akira Takizawa and decides to go back to Japan along with Saki. While waiting for their flight, they watch a news covering a missile attack on Tokyo.
Aired 10/04/2009EP 1 - I Picked Up a Prince

Eden of the East
On November 22, 2010 ten missiles strike Japan. However, this unprecedented terrorist act, later to be known as "Careless Monday," does not result in any apparent victims, and is soon forgotten by almost everyone. Then, 3 months later... Saki Morimi is a young woman currently in the United States of America on her graduation trip. But just when she is in front of the White House, Washington DC, she gets into trouble, and only the unexpected intervention of one of her fellow countrymen saves her. However, this man, who introduces himself as Akira Takizawa, is a complete mystery. He appears to have lost his memory, is stark naked, except for the gun he holds in one hand, and the mobile phone he's holding in the other. A phone that is charged with 8,200,000,000 yen in digital cash.
(Source: Production I.G website)