Wortenia Senki

High school student Mikoshiba Ryouma was summoned to a different world in the middle of a war Sensing the malice from the one who summoned him a summoner of the Oltormea empire he uses his martial arts to run away killing important people of the empire during his escape After the escape he rescues two twin sisters from the hands of thieves The sisters who can use magic swear to serve him as subordinates Thus Ryouma begins his journey on the path of the supreme ruler