Mouryou Kiden

Mouryou Kiden: Legend of the Nymph (魍魎姫伝, Mōryō Kiden) is a manga series by Tamayo Akiyama, a former member of the all-female Japanese manga artist group Clamp.

Plot
The world is hidden in fog, and is ruled by the goddess of Light, Mikage, from the Fuyo Palace, in which she protects the Pillars of the Sun.

Ayaka, daughter of the goddess of Darkness, Reiki, who has been sealed by Mikage, attacks the Fuyo Palace at the head of her eleven Mouryou to destroy the Pillars of the Sun and revive her mother, but she meets Kai, son of Mikage, and instantly falls in love with him. When Kai, who doesn't know who the girl is, speaks about her and says she's a monster, she flees crying, and he follows her to the kingdom of Reiki, only to discover that the enemy kingdom is being protected by his mother Mikage.