If you care

Empress Theresa is one of the worst books ever written. Bad writing, the main character is more Marry Sue than Marry Sue, every couple of sentences is there bad Christian/creationist propaganda and so on. And Art on the cower is terrible.

It is mainly known, because many YouTubers had made videos criticizing it and talking about how stubborn is the writer of the book.
He basically created this book as a love piece to Joan of Arc. And can not accept that his book is bad so he goes too deep length to defend it and call critics "Trolls".
He reached the maximum number of replies in one thread. And maximum was 5000 replies.

TLDR: The writer of the book is basically a character similar to Chist Chan, and he wrote a really bad book. So the internet is kind of obsessed with him now.