Cardcaptor Sakura. Main series

Sakura is quickly learning that not all mysteries come from magic cards--some come from the heart. One person who is close to the hearts of many is the charismatic Yukito, whose true form is the winged guardian, Yue. As Sakura struggles to reconcile her feelings for this mysterious older boy, she finds that she has two suitors of her own: Li Syaoran, her one-time rival, now a close friend, and Eriol Hiiragizawa, the enigmatic new transfer student....

Young Sakura has long fostered deep feelings for the older boy, Yukito, and even though it's unlikely that he feels the same way about her, she cannot continue to keep her feelings secret. Meanwhile Eriol, the mysterious transfer student, plots another dangerous trap for her.