No Game No Life: Dai-2 Shou - Toubu Rengou-hen (2021)

宣伝文句
“神”を名乗る少年に“ゲームで全てが決まる世界”に召喚された天才ゲーマー兄妹・空と白は、またたく間に人類種の王座につき、異界の知識で内政を固め次の獲物を狙っていた。『東部連合』――世界第三位の大国。ついに異種族とゲーム開始――!!

Source: www.anisearch.com/manga/69412

Blurb:
The manga adaptation of the hit light novel series enters its second chapter!  Summoned by a boy who calls himself God in a world where games decide everything, the prodigy gamer siblings Sora and Shiro quickly rise to the top of human society. Having secured a future for the nation of Elkia and humankind in this world, the siblings set their sights on a new prize—the Eastern Union. It’s finally time to challenge the other races! 

Source: www.anisearch.com/manga/69412