Rule Number 10
Rūru Nanbā Ten (収束法 《ルール・ナンバー・10》)
As the showdown with the werebeasts reaches its climax, Sora searches for a way to achieve victory while maintaining order and balance 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”.