The Princess of Clow Country. Sakura is a cheerful, selfless, and strong-hearted young woman. She states if there was ever something that she could do, she would try her absolute best. Her wings are the manifestation of her soul, namely her heart and memories. She possesses a mysterious power, manifest in the magical powers of the scattered feathers, which is sought by Fei Wong Reed. Much later on in the story, something shocking is found out about her

Informations take from wikipedia.

Her first apparition is in the Otou's country. She is an hunter and he pair with Kusanagi and her beloved dog Inuki. During the Otou saga she help the Sakura and Syaran's crew to find an evil demon and the plume. They will meet also her and Kusanagi in the Tokyo countrie (the Tokyo Revelation saga).
Yuzuriha born as an X1999 character as an inugami master (inugami = dog spirit) and it's on the Dragon of the Heaven side.

Dunring the Otou saga, Yuzuriha and Sakura become great friends. Yuzuriha cheerfulness paired with Sakura's kindness and charm make one of the best crossover friendship that out beloved authors (CLAMPs) make in Tsubasa Chronicle!

... quite simply, a listing of fans. Fanlistings are similar to any other group or club you might join. You can join a fanlisting to 'show your love of something.' Most fanlistings have small codes, buttons, or plaques available which you can display on your own website if you'd like. Our site definition of a fanlisting is: "A fanlisting is simply an online list of fans of a subject, such as a TV show, actor, or musician, that is created by an individual and open for fans from around the world to join. There are no costs, and the only requirements to join a fanlisting are your name and country. Fanlistings do not have to be large sites (although some are); they are just a place where you can sign up with other fans. TheFanlistings.org is the original (but not official) web directory for fanlistings, dedicated to uniting the fans." [From thefanlistings.org]