Lucy Caldwell suffered a disaster in her childhood - her house was burnt, which turned fatal for her parents. She grew up in a children's house with other orphans. She could never forget the fire incident and was sure her parents were murdered, so she wished to investigate the case when she grew old enough. Lucy, like all the other children, frequents a Spirit School, where children are taught to control their inner spiritual energy. When they reach 15 years of age, they befriend spirits that reside in the vast Spirit Forest in East Land and receive the Bond Item - an object from the spirits which permits to summon them whenever in need. Each person is able to form a bond with a single spirit. However, there are certain spirits that never approach humans, are known as man-eaters and have marked severe borders on their territory, eating anyone who trespasses on them. Such is the clan of the tailed foxes - the Huli. Lucy has already reached 15 years, so she goes to the Spirit Forest with her classmates to befriend a spirit and bond with them. However, while sitting around a bonfire and listening to her classmates' scary stories, she remembers the dreadful day of how her house caught fire in past, and, worked-up, runs off into the depths of the forest to cry off her anguish. But as elders often say, dense forests are definitely not a place for little children to run around, for the danger lies in every corner, as Lucy soon comes to realise...

The Guardian Spirit (The Guardians of Nine Heavens, Book 2)

 Blackness covered her consciousness, and then she began to come back to her senses. She groaned and raised her heavy eyelids, looking around. Her whole memories flowed in. Her soul’s, bunny spirit Lutecia’s remembrances were followed by her current incarnation’s, Lucy Caldwell’s ones, so now she perfectly knew what was happening to her, and what the reasons were. She saw Incubus, who had just taken his hand off her forehead. It was apparently he, the demon prince of dreams and illusions, who had given her the memories back. 


 She looked aside and saw her cousin Lily and her husband Samael. Lily stared at her with concern, her hands clutched together, while Samael had a stern gaze, as usual. Then, when she glanced at the edge of her bed, she saw him, in his white Yin form, watching her with worry. His lovely red eyes had always given her not the association of blood like it gave to others, but rather, two dazzling rubies. 


Chapter 38: More Mysteries of the Past