Madan no Ou to Seisen no Carnwenhan

Tigur is an archer serving Eren, the warrior princess of Lightmeritz, and Lim is Eren’s second-in-command. They find themselves stranded in Asvar, an enemy nation that has invaded Zystart. While there, they meet Princess Guinevere of Asvar, who reveals that Artorius, the 300-year-old founder of the country, has mysteriously returned to life and seized control. Tigur and Lim agree to work with Guinevere but soon face a powerful unknown archer who surpasses Tigur in skill and addresses him as "the king of this generation." In this unfamiliar land, they are forced to confront a formidable adversary.