Yukito/Julian is Touya/Tori's best friend. He is also Sakura's crush and wonders why she is so shy around him. Li Shaolan also fancies him and constantly tries to please him with food, as does Sakura. However, Li realises that he is just attracted to the magical powers that Yukito/Julian has and is not really in love with him.
Yukito/Julian lives with his grandparents. He is very kind and always lends a hand to all the clubs if they are short a member. Yukito/Julian is also a bottomless pit, constantly eating.
He always looks out for Sakura. The one he loves, however, is Touya/ Tori.
Though Yukito/Julian seems normal, he is not all he seems. There's more to him than we are led to believe when he transforms one night in to Yue! This all happened to Sakura's surprise as she thought that once she had collected all the cards her worries were over. However, she still thinks of him as Yukito/Julian and doesn’t fight him.
Because of this, Sakura almost fails the Final Judgement, but when he talks about erasing everyone’s memory to the day when Sakura first opened the Clow book, she realises she could never let that happen.
Yukito/Julian is very sporty. He is on the Soccer team and can easily beat the Basketball squad.

Yue

Yue is Yukito/Julian’s alternative form. Yue has the mind of Yukito/Julian and what I mean by that is he remembers and knows of his other form but Yukito/Julian has no idea of his other form’s existence. Yue is the judge of the “final judgment”. He is the one that judges who the new master/mistress of the Clow Book will be. Should he get beaten, he has the choice to decide whether or not they are worthy to be the new master/mistress.
He is very strong and easily defeats Li. He is reluctant to let Sakura take the Final Judgement, as she did not catch all of the cards. However, he listens to Keroberos and allows her to fight him.
In the Second Story Arc, he remains as Yukito/Julian most of the time but is always ready to turn back into his original form when Sakura needs him. Although Julian eats a lot, Yue eats nothing as he draws his power from the moon. However, when Sakura becomes his mistress he draws on Sakura’s Star magic and is very weak early on in the Star series, as she is not very powerful yet.