I don't get it.

The CLAMP fandom always had this obsession with knowing why Syaoran went back to Hong Kong at the end of CCS. They're convince that there's some special reason why he left, while at the same time over looking simple reasons, like perhaps his parents weren't happy with allowing their ten-year-old son to live alone in another country for the rest of his life.

Even if Syaoran did have to return to Hong Kong for an important save-the-world reason, wouldn't Sakura know or even go with him? She's the strongest magician in the world and could easily handle any problem better than Syaoran.

Besides it's a common trope in shoujo for the main couple to experience some sort of "crisis" like that at the end of the series. Either the guy/girl almost leaves but it's avoided at the last moment or he/she does leave and at the very end they're reunited. It's a bit annoying that many decent series end the same way.

I just don't get why there has to be a special reason for Syaoran's return to Hong Kong.