When Kazuma had to run away from his house, four years ago, he got to some village in Japan were he meet this girl. Tsui Ling was nice and sweet and cared about Kazuma, and both of them started to develop felling towards each other. Kazuma decided to stay on Tsui Ling´s village and live with her, he had finally found a place were power didn´t matter and had someone that love him and that he could love. But some time later, for some unknown causes, they got involved with the president of a powerful magic organization, called Bernhardt Rhodes, who kidnaped Tsui Ling. Kazuma went after him to save her, but as he hadn´t contracted with the Wind God yet, he couldn´t do so and Tsui Ling was sacrificed in front of him to feed with her soul and body Bernhardt´s master, a terrible demon that he pretended to awake. Kazuma was able to destroy the demon later on thanks to him contract with the Wind God, but he kept a big hound inside his heart, because he had promised Tsui Ling to protect her for ever and he wasn´t able to do so.