Wīku Sukuea (駒並べ 《ウィークスクエア》)
When Stephanie gets into trouble during a game of blackjack with a group of upstart nobles, Sora and Shiro return to restore order in Elkia.
They are both NEETs and Hikikomoris… but on the internet, the genius gamer siblings Sora and Shiro are known as the undefeatable “__” (blank). Sora and Shiro’s talents and skills are so abnormally good they are considered as urban legend. One day a young boy Teto appears before them, claiming to be “One’s Lord”.