Sky Walk

Sky Walk (解離法≪スカイ・ウオーク≫) is the ninth episode of No Game, No Life.

Characters
The following characters are listed by the order which they appear in.

Major characters

 * Shiro
 * Sora
 * Stephanie Dola
 * Jibril
 * Chlammy Zell
 * Feel Nilvalen

Minor characters

 * Non-speaking roles
 * Shiro's Mother
 * Sora's Father
 * Hatsuse Izuna

Events

 * Flashback of Shiro's memory from age 0-3
 * Shiro goes mad from Sora's disappearance
 * Stephanie and Jibril believe Shiro had false memories inserted by Izuna
 * Jibril plays chess with Shiro, hoping to erase her supposedly false memories
 * The girls raised the possibility that Sora does actually exist and that there was a game still ongoing
 * Flashback of how the game was set up
 * Shiro winning the game and reuniting with Sora
 * Sora issued his two requests to Chlammy and Fiel

Key differences from light novel
In the light novel,
 * There was further discussion about the limitations of the Ten Pledges where each character was asked to 'become' another character after losing a game. This was in Volume 3: Prologue, Part 2, which was skipped in the anime.
 * Scenes of Sora playing against Chlammy were interlocked with the scenes of Shiro searching for Sora from the start. In the anime, the scene of Sora and Chlammy's game only appears after Shiro loses consciousness.
 * Steph was the one who first discovered the possibility that they were in the middle of a game, whereas in the anime, it was Shiro who did so.
 * Jibril confirmed Sora's existences by contacting Hatsuse Ino, acknowledged and requested for punishment for the guilt of suggesting the removal of those "false" memory from Shiro, and expressed anger toward the one who caused the situation. These are skipped in anime.
 * Shiro did not actually hear Sora calling her out to hold him so he does not go insane. Sora however, does experience the presence of Shiro, Steph and Jibril by his side, who, from his point of view, react to his words..
 * Shiro figured out how the game would progress by using Sora's usual habit which is not shown in the anime.
 * There are a number of scenes reflecting Chlammy's individual reactions to each of Sora's memories, which did not appear in the anime.
 * Chlammy and Fiel were discussing how the game was biased toward the one who designed the game, whereas this was skipped in the anime.
 * There was a special rule that you have to place your piece even if you cannot reverse any of your opponent's pieces, which is not mentioned in the anime.
 * Only Sora, Shiro and Chlammy were crying after the game. In the anime, Fiel was also crying with them.
 * Shiro's conversation with Jibril and Steph about their mutual past as the two remember it as well as the game of chess between Shiro and Jibril is held through the tablet, not via direct interaction.

Trivia

 * The episode is in black-and-white from the point when Shiro falls into despair to the point when she realizes Kuhaku must never lose (in her chess game against Jibril)