Returner

Returner , Ritaanaa? is a 2002 Japanese science fiction film, directed by Takashi Yamazaki and starring Anne Suzuki and Takeshi Kaneshiro.

Milly lands in the aftermath of a shootout in Tokyo Bay, Japan, where a hitman named Miyamoto Takeshi Kaneshiro holds the murderous Triad mobster Mizoguchi Goro Kishitani at gunpoint. Her arrival allows the mobster to escape and Miyamoto takes Milly, who he thinks he accidentally shot, back to his place. She was saved by a plate of metal in her coat. She tapes a tiny bomb to his neck and threatens him into helping her on her mission. Miyamoto has a personal score to settle with Mizoguchi, who killed his childhood friend by kidnapping him and selling off his organs.That night, Miyamoto sees Milly cleaning up his trenchcoat on a coat hanger, so he tells her to go back to sleep. The next morning he discovers photos of himself and a newspaper article on his death. He shows these to his weapons supplier Shi Kirin Kiki, who tells him its an elaborate trick the Triads wouldnt waste their time on. ........

Source: Wikipedia