Although the film is inspired by the last days of Nirvana's lead singer Kurt Donald Cobain's life, the characters and events in it are all fictional. Van Sant began to conceive the film script as early as 1996. At the same time, Van Sant started filming the movie " Good Will Hunting ", so "Last Days" was put on hold for a while. In 1997, Van Sant met Michael Pitt, who was new to the film industry. Although he was a little old compared to the characters conceived by Van Sant, he was very close to the characters. At that time, Pitt was already able to play the guitar proficiently. Can compose by himself. So Van Sant decided to let Pitt play the protagonist and discuss the film together, and the script gradually took shape.
After the 1989 movie " Drugstore Cowboy ", Van Sant bought a large house in Portland. However, this house did not bring him the beauty he had imagined. He began to think it was a bit absurd, because there were always people bothering, either asking for rent in the basement, or asking for an autograph, even if he went out for a walk, he would be yelled. So Van Sant wrote his own experience into the script, and Blake lived in the old and empty house
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