"Secrets of Japan: Modern-Day Exploration of the Land of the Rising Sun" is a horror roleplaying book by Michael Dziesinski published by Chaosium Inc. in 2005. The book is part of the Call of Cthulhu Roleplaying Game Series and provides players with a terrifying adventure in the modern-day Japan. With a perfect-bound paperback format and 360 pages, the book is filled with chilling secrets and mysteries to be uncovered by brave investigators. The illustrations by the author add a visual element to the horror and fantasy gameplay, making it a must-have for fans of the genre.