Shortly after hearing from a colleague about a woman whose brother committed suicide after seeing his doppelgänger, a Japanese engineer on the verge of a breakthrough in medical technology is confronted by his own.
Doppelganger is a 2003 Japanese black comedy fantasy film directed and co-written by Kiyoshi Kurosawa, starring Kōji Yakusho, Hiromi Nagasaku and Yūsuke Santamaria.