The writer, Masaru Baba, began with a novel by Shintaro Ishihara. His approach was apparently conventional, and he disagreed sharply with Shinoda about the gambling scenes. “We just write ‘they gamble,'” he told the director. Shinoda nodded, kept his peace, and used the novel as a basis for shooting the extraordinary card games. The film makes no effort to explain how the game is played, but is visually acute about the details: The goading rhythm of the croupier, the ritual of a card withdrawn from concealment and folded within a cloth, the placing of bets. Shinoda gives great attention to the implacable faces of Muraki, Saeko and (at a greater distance) Yoh. The gambling scenes are not about the game but about the emotional signals being exchanged by these three; Shinoda has little interest in the other players.