The story of the film comes from a stage play written by Hirokazu Koreeda. Hirokazu Koreeda wanted to explore what kind of existence the actor itself is, and how to divide the emotional boundary between the actor and the character he plays
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On the set and in the editing room, the bilingual translator of director Hirokazu Koreeda is the same person. He will let the other party add subtitles to the picture he is editing, and Hirokazu Koreeda edits based on the subtitles. But sometimes he doesn't know where to edit, so he communicates with the translator, and the other party suggests that he should add one more word. Therefore, Hirokazu Koreeda can only edit line by line
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