A few things you should know before you begin to read my synopsis: 

• These synopsis covers all the chapters (phrased as "Contacts" by CLAMP), including the end of the story. Therefore, if you don't prefer to read any spoilers, please leave them until you are ready to do so.
• These synopsis are translated from the Chinese version published by Tohan Comic, Taiwan. As English is not my first language, please forgive me for any grammatical mistakes and my artless translation. Any reasonable comments, correction and suggestions for improvment are always welcome.
• I have prepared two versions for each synopsis, namely HTML and TXT formats. They are here for your convenience. Choose either or both as you wish.