I want to find my own version of chivalry! Theoru, a boy born into a family of assassins, was branded "incompetent" and exiled by his uncle, the head of the family.Teoru's stealth skills were so advanced that no one in his family realized that he was the most powerful assassin magic user...!Taking advantage of his exile, Teol joins the Sixth Knight Order of Oikot Kingdom in order to become a knight, which he has admired since he was a child.While completing missions using assassination magic with his unique friends including his senior knight Lina,The former strongest assassin awakens to the mission of protecting people! From an assassin who steals lives to a knight who protects the people - The story of a former assassin's unparalleled knighthood begins!