Hilja, otherwise known as Mercury, is seen as the wisest of the celestials. She dedicates her time to advancing society through sciences. Despite her focus on the future, she has deep respect for the past, spending her free-time enraptured by history books. She is acutely aware of her public image and uses it to get her way. Hilja confides in no one but her moon retainers. Her ambitions disregard morality, but she is reasonable and rarely acts rashly. She came to rule over the Mercury division when she formed a contract with the great tortoise Hermes at 20.