Story: The story is really original and is somewhat easi to follow even with all the different countries and character secrets you can keep in mind under the tale. I think its impossible to say that the story is bad no matter who you asks.
Art: Yea you have guesed it. Its really CLAMP art in Tsubasa but not negativ at all. all is shown really clear and pretty. I think most people know CLAMPS signature art but I have to say this is best together with xxxholic (:
Character: Gosh! you just cant keep yourself from feeling with all the different characters through the story. especially the main characters. all have outstanding minds and acts just after their head. I can promise one thing: None! of the main characters are flat.
Enjoyment: Tsubasa is the manga I have enjoyed the most. When you first have the manga you just cant stop reading bechause it sucks you right into the different worlds and the characters feelings.. I have felt a lot of sadness throgh the manga but I only think that is good bechause I can relate myself to it so much.
It gets under your skin.