Your artwork has been published in a book, without your permission or licensure.
The book is "Wisdom of Palace Hands" by Penny L. Pitassi. ISBN#9780615731094
Your ghost warrior is on page 123
The author is a karate instructor who is REQUIRING all her students to purchase her book - several hundred in multiple schools across the USA.
She even talks in the front of the book about the illegality of copying anything but then steals from artists and plagiarizes from other authors.