Key Of Life (2012)

Sakurai is an aspiring actor who becomes frustrated with his life. Sakurai then decides to kill himself, but before committing suicide Sakurai heads off to a public bathhouse. At the bathhouse, Sakurai then witnesses a man named Kondo collapse and lose his memory in front of Sakurai. On a sudden whim, Sakurai switches locker keys with Kondo and pretends to be Kondo. Sakurai soon finds himself in trouble with the Yakuza.