chivalry
The knight is a code of conduct established in medieval Europe. Though the article is supposed to be followed, the actual articles did not follow the story. Rather, the ruling class, such as swords and armor monopolizing the armor, made the actions that were placed in front of the knight, such as betrayal, greed, robbery, rape, and atrocities. Therefore, it can be said that the code of ethics has been established in order to suppress such violence. Because there were not many articles following the knight, articles that acted according to the knight were praised from the surroundings, and the knight thought it was honor.