No Game, No Life: Zero - Easter Eggs & Hidden Details

The appearance of Jibril in the film is a significant moment for fans of the series. Here, she is portrayed as a terrifying, destructive force of the Great War, which contrasts sharply with her more comical and subservient personality in the main series. Her brutal and emotionless slaughter of Schwi provides a dark backstory and adds tragic weight to her character's later interactions with Sora and Shiro.

At the very end of the film, back in the present day, Stephanie Dola (a main character from the TV series) is shown to be a direct descendant of Riku's sister, Corounne. She wears a necklace that has been passed down, which bears the names of Riku and Schwi, serving as the only physical proof of their existence and sacrifice.

The movie is filled with dialogue and visual cues that heavily imply Sora and Shiro are the reincarnations of Riku and Schwi. Schwi's last wish is to be with Riku again, and Tet later tells Sora and Shiro they were "born in the wrong world." The names themselves are opposites: Riku (Land) vs. Sora (Sky), and Schwi (from German 'Schwarz' for Black) vs. Shiro (White).