Lykoris

Alice Ruby was a Princess who resides in Wonderland peacefully, a wonderland is a place for in-born magicians and witches. Her everyday life is normal until her mother decided to make her marry a Prince that lives in east-faction in their kingdom because of the Power and Rank, although Alice doesn't want to get married off. She can't do anything but one of her Faerie friends suggested that if she doesn't want to get married, then the only solution for it is to go where the Wicked-Magician is.

Alice went to the wicked witch of the west to make a selfish wish. By then, A cat-human named Chesire Cat faced her and eligibly ministering to Alice's decision who wants to leave the wonderland but to do that, Chesire needs to devour Alice's magical power. 

In their kingdom, magic is the most important thing in their life. If they lost their magic, they will get exiled in the Human-realm. 

Alice agreed just to escape from her future husband, and because of that. Chesire and Alice formed a contract that shouldn't able to be broken for eternity.

(This story was inspired by the story of Lewis Carroll's Alice in wonderland.)

Her name is Alice

I haven't found anything about Syaoran's curse. There's no death curse regarded in the books.

I sighed. "A-ah! Ms. Alice, don't be sad. I'm sure you'll be able to find it in no time." Suiei instantly reacted.

No, I don't think I will be able to find it here. This curse is somehow ancient. It's not really common.

If we are talking about knowledge then Kai. Yes, Kai might be able to help me.

That kid is so smart. I think he knows about it.

"Suiei. I will go somewhere. You don't have to follow me. I'll be fine on my own." I quickly ran away from him.

I don't think he will be grateful to see Kai, after all, Kai is still being a lowborn. People don't like him.

I'm sorry Suiei, I will leave you for now.

When I lost sight of him. I stopped running instead, I walked.

Chapter XLVII