Sovereign of Judgement is a Manga/Manhwa/Manhua in (English/Raw) language, Manhwa series, english chapters have been translated and you can read them here. You are reading Sovereign of Judgement chapters on ManhwaZ, fastest updating comic site. The Summary is
On an ordinary afternoon, Ring suddenly appeared in the middle of the classroom. If you want to live, you have to climb up the ring and kill your classmates. A brutal slaughtering game that simultaneously tests human fighting power across the globe begins.