Kitano conceived the idea during the shooting of
Sonatine (1993). Then called 'Fractals', the idea was to depict how an ordinary person's dreams would create an imaginative world, where the dream person's dream's would create another imaginative world and so on, going back and forth between his actions in reality and those in his imaginary worlds. The project was, for many reasons, put off throughout the years, until Kitano rewrote the storyline and made himself the protagonist.
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