No Game No Life volume 6 - Yuu Kamiya

 Long before Shiro and Soara arrived, and started reforming, the world of Disboard, the world was torn assunder by the Gods battling it out.

An amidst all the races besetting each other, the lowliest of them all, the ones without magical powers or any probability of survival, humanity fought to just survive.

But this all changes when a boy named Riku befriends a faulty Ex Machina, Schwi, who wants to learn about the "heart" that drives humanity and how they keep surviving.  Together they at first hide, but then start forming a plan to end the Great War, falling in love with each other at the time.  As Schwi discovers more about humanity, and Riku about himself, they set the wheels in motion for the greatest of endgames a game can have.

Set outside the main storyline, yet important to get to know how Disboard became the world of the series, this is the book that tells the story as filmed in No Game No Life Zero.  With the same drama and awesome heroics of the movie, a book always has the benefit to explore the depths of the characters far more, as well as more detailed descriptions and events on how they set the races up against each other to end the war.

Truly a magnificent volume in the series!