Lord Marksman and Carnwenhan

Tigur, a young archer who works for Eren, the warrior princess of the Principality of Lightmeritz, and Lim, Eren's second-in-command. For some reason, the two are now isolated in the midst of Asvar, an enemy nation that has suddenly invaded Zystart. There, they are told an unbelievable story by Princess Guinevere of Asvar. Artorius, the founder of Asvar, who is supposed to be 300 years old, has suddenly risen from the dead and has taken control of the country in the blink of an eye. The two decide to cooperate with Guinevere, but they are confronted by a mysterious man who has more power with a bow than Tiggle, and who calls Tiggle "the king of this generation." In a foreign land, Tigur and Lim are confronted by a fearsome enemy. (Source: Shueisha, translated)

Set in Western Europe during times of war, Eleanor "Ellen" Vertalia, one of the Vanadis of Zhcted, leads the battle into Brune. There are, in fact, seven Vanadis, named for having each received a powerful weapon from the dragon to individually reign over seven territories. The power of the Vanadis invokes dread and fear from their enemies. An earl in the service of the country of Brune, a young archer by the name of Tigre, experienced the Vandis's power firsthand after being defeated on the battlefield by Ellen. However, Ellen chose to spare his life after witnessing his skills, but in exchange, he is asked to serve her. (Source: JCafe)

The Lord Marksman and Michelia novel series is an alternative parallel world to Kawaguchi's Lord Marksman and Vanadis light novel series, with Ludmila instead of Eleonora as the main heroine. In this alternate world, Zhcted does not declare war on Brune, but instead forms an alliance to wage war against the kingdom of Muozinel. A young man named Tigre goes to war in his father's place, and his first taste of battle begins to go well, until Brune's battle lines crumble to an ambush. The commander of Tigre's unit flees, until Ludmila, the Vanadis warrior of Olmutz, comes to the rescue. Two years after that battle, Tigre and Ludmila have a chance reunion, just as the curtain is raised on a new war, and a legendary evil awakens. (Source: Anime News Network)