The two main characters of "No Game No Life", Sora and Shiro, together go by what name?

The answer is "Blank" because Sora and Shiro, the two main characters of "No Game No Life," are known by this name when they team up to compete in games and challenges. Sora is the brother, and Shiro is the younger sister, both of them are incredibly talented gamers who together form a formidable and undefeated duo. They use the name "Blank" to represent their unity and the fact that they are void of weaknesses, effectively portraying their unbeatable skills and strategies.