Naoki Hyakuta is a Japanese novelist and television producer. He is known for his right-wing political views and denying Japanese war crimes prior to and during World War II. He is particularly known for his 2006 novel The Eternal Zero, which became a popular 2013 film, his controversial period as a governor of government broadcaster NHK, as well as his support of Nanjing Massacre denial. Hyakuta has written a number of other books, several of which have been turned into films, such as Bokkusu and Monsuta.
If you like the ABC Family holiday shows, then you will definitely like this book. The short stories were all a little too sappy and predictable for me.
In terms of readability - definitely a good book for moderate Japanese readers! Even if you don't know some kanji, you can still get the overall meaning without hitting the dictionary too often.