Wortenia Senki

High school student Mikoshiba Ryouma is suddenly pulled into another world in the midst of a brutal war. Realizing the summoner from the O’ltormea Empire has sinister intentions, he fights his way free, taking down key figures of the empire in his desperate escape. Once free, he saves twin sisters from bandits—both skilled in magic—who pledge their loyalty to him. With their help, Ryouma sets out on his path to become the ultimate ruler.