An Oath to be Kept follows the story of Kisei Akito a young boy in the great kingdom of Raggeth, with big dreams. A certain incident occurred in his childhood, which left him void of all the memories he had formerly possessed. All that remained was the memory of an oath, an oath to a mysterious man. He couldn't remember who that man had been, all he knew was that, that oath was important and it had to be kept. An oath to be become stronger than every emperor that came before him and to protect his loved ones, even if it courted death. Follow his story as he regains memories of lost, as he makes more friends, as they make memories of a new, share laugh filled moments, scenes of anger, action packed battles and shed tears of sorrow.