Tales of Vesperia: The First Strike

Several years after the end of the Great War between humans and monsters, known as the Human-Monster War. Although the imperial throne has remained vacant since the death of the previous emperor, the world has generally moved toward peace— People have built a prosperous society relying on the power of the source, Aer. Crystallized Aer is called Mana Cores, which serve as power sources for magic devices and even create barriers that protect towns from any threat, becoming indispensable to people's lives. One day, deep in a forest not far from Heliord. Yuri Lowell, Flynn Scifo, two rookie knights under Niren Squad of the Imperial Knights, along with their senior knights, the twin sisters Hisca and Chastel, are carrying out a mission to investigate abnormal eruptions of Aer and repel the monsters that appeared as a result. Yuri Lowell, who joined the order full of ambition and admiration for the knights, and Flynn Scifo, who values discipline and justice, were childhood friends who grew up together in the commoner district of the imperial capital Zaphias. They happened to reunite at the induction ceremony several years later. Captain Niren, while deeply investigating the abnormal changes, begins to suspect the existence of an unknown magic device within the forest ruins. And just as they were exploring, a large-scale anomaly suddenly occurs affecting the entire area around Heliord.... Although Yuri and Flynn act together as members of the knight order, they argue due to differences in their beliefs. The two, having learned about the dark side of the empire, must make the resolve to uphold their respective "justice"...