I finally figured out the following The Mad Immortal is book #1 in The Mad Immortal Series. The Dawnstar Conspiracy is book #2 in the Mad Immortal Series, and finally, this book, The Null Gate, A LitRPG/Progression Fantasy Series is book #3 in the Mad Immortal series.
You would think that the publisher would include this with the title.
You would think that the publisher would include this with the title.