According to Publishing With Love, Japan was the second biggest ebook market in the world in 2018, after the USA.
Ebooks worth $1.48 billion were sold in Japan in 2018.
Share Story says 82% of sales come from comics. Other popular genres include Business, Lifestyle & Health, and Sociology.
On Amazon, authors only earn 35% Royalties on book sales in Japan, but this goes up to 70% if an author opts in to KDP Select.
The ebook market in Japan