Update: As of today, January 02 2019 Amazon no longer has those books tagged as ADULT and they can be freely found in the general search, a.k.a. I’m no longer dungeoned.
Amazon US – https://www.amazon.com/dp/B079KQC9K7
Amazon UK – https://www.amazon.co.uk/dp/B079KQC9K7
Amazon Germany – https://www.amazon.de/dp/B079KQC9K7
Amazon France – https://www.amazon.fr/dp/B079KQC9K7
Amazon Spain – https://www.amazon.es/dp/B079KQC9K7
Amazon Italy – https://www.amazon.it/dp/B079KQC9K7
Amazon Netherlands – https://www.amazon.nl/dp/B079KQC9K7
Amazon Japain – https://www.amazon.co.jp/gp/product/B079KQC9K7
Amazon Brazil – https://www.amazon.com.br/dp/B079KQC9K7
Amazon Canada – https://www.amazon.ca/dp/B079KQC9K7
Amazon Mexico – https://www.amazon.com.mx/dp/B079KQC9K7
Amazon Australia – https://www.amazon.com.au/dp/B079KQC9K7
Amazon US – https://www.amazon.com/dp/B07L33VLVW
Amazon UK – https://www.amazon.co.uk/dp/B07L33VLVW
Amazon Germany – https://www.amazon.de/dp/B07L33VLVW
Amazon France – https://www.amazon.fr/dp/B07L33VLVW
Amazon Spain – https://www.amazon.es/dp/B07L33VLVW
Amazon Italy – https://www.amazon.it/dp/B07L33VLVW
Amazon Netherlands – https://www.amazon.nl/dp/B07L33VLVW
Amazon Japain – https://www.amazon.co.jp/dp/B07L33VLVW
Amazon Brazil – https://www.amazon.com.br/dp/B07L33VLVW
Amazon Canada – https://www.amazon.ca/dp/B07L33VLVW
Amazon Mexico – https://www.amazon.com.mx/dp/B07L33VLVW
Amazon Australia – https://www.amazon.com.au/dp/B07L33VLVW