Infinite Cycles: Facing the Ultimate from the Start

It's so well written, I like it very much!

The writing is okay, but I have always been worried about some missing details, so that the more I read, the less enjoyable it becomes. For example, the article mentions that the protagonist is a human being in the second life, so are there differences between these two lives? Do people in this world know the original plot of the Revolving World? Judging from some details, I think this world should have an original work, but the author never said it clearly, which made me very confused. Is the protagonist's second life setting just to set up the plot for him?

The logic is clear and the reasoning is awesome!