Luo Hao

As described by the Black Prince: "Possessing the full set of the five Confucian virtues of benevolence, righteousness, propriety, knowledge and integrity, she was a great figure who carried herself with royal splendor. However, she believed her valor to be the greatest in the world, and compared to the lives of five billion humans, she placed greater value on herself than anyone else on the Earth. Simply put, she has delusions on the level of middle school students.” Luo Hao is very observant of formality and propriety, as well as the rules of etiquette. After the battle with Godou in volume 6 of the light novel, she makes a sibling pact with him. (Source: Campione! Wikia)