In the continent of Wurld, where swords and magic prosper, the finest adventurers only seek one goal... "Regius Primus" Warriors around the world driven by their own personal desires seek to obtain this title by winning the World Championship being held every decade. The ones who acquire the title of "Regius Primus" can gain a single wish from a single nation. But every year, the Ranking Match takes place to decide the participants in the main contest. Hundreds of people aspire to be one of the top in the rankings, but among these people, a certain group stands out. "The 4 Horsemen of Apocalypse" Conquest , War, Famine, Death These four are thought to be the strongest contenders throughout the whole continent... or so they thought.. Rena Frostwing, an orphaned Elf, wants to restore the nobility of her family after being betrayed by the rival families of her nation. Rena although having high magical capacity, her spells are not really suited for combat. One day, while travelling, Rena had a fateful encounter that would change her life forever... She became a student by the one who is called, "Pestilence"...