Does anyone know what the American version of curse is about? Who is that old woman?

The curse comes from those who have suffered strange deaths. Because their death is accompanied by unexpected unspeakable pain, their thoughts before death become more intense, and those wishes between life and death will take them wandering between reality and the underworld. They want to find their enemies and realize those curses that span life and death. Jiayun is an American exchange student studying sociology in Japan. After finishing school, she worked as a nurse in a shabby house near a school in the suburbs of Tokyo. Her care object is an elderly woman Emma, who suffers from severe mental illness, stiff body and inconvenient movement. Like this almost forgotten owner, this house seems to be abandoned, covered with cobwebs and dust everywhere, cold and deserted. Jiayun started her work in this gloomy house, but she was often disturbed by strange things here. Strange sounds came from upstairs from time to time, and the figure of a boy was swaying in the yard. With the gradual understanding and investigation, Jiayun learned that the former owner of the house had cruelly hurt his relatives, so now the whole house has been shrouded in a deep resentment, and it wants to start its own ambition for everyone who enters here. Jiayun, who has no intention of breaking in here, has been firmly trapped by this cursed net. People around her are constantly being punished by curses, and these people who died because of curses are constantly aggravating this deep resentment. There is less and less time left for Jiayun. She must find out the secret of the curse before it completely breaks out, and find a way to crush it completely to stop the terrible curse from spreading. ...