No Game No Life Part 2: Eastern Union Arc Vol. 1

Summoned to a world where everything is decided by games by a boy who calls himself God, genius gamer siblings Shiro and Sora have risen to the throne of the human race and use their knowledge of their world to consolidate their power and aim at their next prey – the Eastern Union, the third largest country in the world. Finally a game against a different species begins!
Notice: This book is written in Japanese.