Gurandomasutā (国王 《グランドマスター》)
After he defeats Clammy, Sora and Shiro set their sights on winning games in all 16 realms and usurping the god of games himself.
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”.