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All current story content is available under the Books main menu option. To see all versions (rough drafts, drafts, release candidates, final public releases) of chapters, select All Posts under the Books menu. Currently, there are two versions of COTK for Book 1. R2 was the first attempt and was scrapped after the author realized it was a failure. R3 is the third, and “last” attempt. You can read the R2 if you want, it has fifteen chapters, you’ll have to find them under All Posts. However, they are not relevant to the story anymore.
Open the FAQ about chapters to learn more.