The human world is divided into regions and heaven, heaven, for people who die of old age, and hell, for people who die unjustly. In this world, there are also mages, who specialize in fighting evil spirits, and heavenly masters, who are the strongest.
Maybe, at a certain moment, you were hurt, but you may not know that it was out of necessity.
The door to hell opened, and at that moment, she disappeared. This might be her fate. It's really hard to be the 'Princess of Heaven and Earth'!