Koma (film)

Koma Chinese is a 2004 Hong Kong psychological thriller directed by Law ChiLeung, starring Karena Lam and Angelica Lee.

In the end, Ching wakes up in hospital, where a doctor tells her that she was in critical condition, but saved by a kidney that belonged to the dead at the scene where she was found. She realizes that Ling hacked herself to death to give her the kidney she always wanted. Unable to digest this information, she starts screaming, begging the doctor to remove her kidney, as the camera cuts to a shot of Ching telling Ling they will always be together, and another of Ling lying dead with her voiceover saying, Youll owe me this forever. There is a final shot of Ching, under the effect of sedatives, falling unconscious.

Source: Wikipedia