User blog comment:Gojita/Shaman King Spoilers/@comment-178.148.209.58-20140327084716/@comment-1442230-20140328032048

When the manga series was being serialized, the author was forced to conclude the story early with an incomplete chapter (the last chapter of volume 32). The series was compiled into a 32 volume series.

When the whole series was re-issued in the special kanzenban format (sorta like a deluxe edition) known as "Kang Zeng Bang", Hiroyuki Takei was able to illustrate and write the ending that he originally wanted for the series. The content of the "Kang Zeng Bang" edition includes all the chapters of the original 32 regular edition volumes (except the makeshift last chapter of volume 32), which is why the series is basically the same, plus 20 unpublished chapters that exclusive to the kanzenban editions. Those last 20 chapters (265-300) are the actual conclusion to the Shaman King original series.

Shaman King Flowers is a sequel series. I don't know if it's the end, more like a new beginning?

I hope this explains things?