It is rumored in the martial world that a mystery white-haired girl suddenly appeared around the thief Feng Ling Er. She is so powerful that many martial arts masters can't defeat her. The girl's identity, the source of her power and her influence to the world all caused discussion among the public. But Feng Ling Er and the white-haired girl named Bai Yu Xiu never care about it. They travel the world with pleasure, unaware of a great conspiracy coming towards them.

In a story set years in the past, Himura Yuu is a studious and diligent young man intent solely on maintaining his top academic position at Otowa Academy. One day, he meets a mysterious girl named Amamiya Yuuko, who, to his surprise, recognizes him. Memories of a distant childhood, memories rather left forgotten... meeting Yuuko again will force Yuu to confront the regrets and sorrows of their collective pasts and presents. In the present, Kuze Shuuichi may seem like a womanizer, but upon closer inspection, is a man who would rather be left alone. Hayama Mizuki, however, is not the type of girl who would let him be, especially after hearing the beautiful sounds of his violin performance. As Mizuki attempts to become closer to him, Kuze attempts to push her away—the tale of their budding relationship is darkened with undertones of an imminent tragedy.

Due to the influence of someone who visited her town when she was a child, Princess Mikoto of Elua decides to become a hunter and search for treasure all over the land of Driland. She sets out on her journey with her personal assistant Wallens, but they are soon joined by Pollon, a hunter who dreams of being a hero, and Paan, a wandering knight. As they continue their exploration they begin to sense great danger drawing near.