 Volume 1 publication date February 20, 2009 
Volume 2 publication date February 19, 2010 
Volume 3 publication date March 2012 9 
Volume 4 publication date August 2, 2013 

Outside of Japan, it has been published in the Korean language from the original source material in the Republic of Korea.In addition, it has also been published in Traditional Chinese in the Republic of China.From July 15, 2010 until September 30, every Thursday night, the TV drama "The Japanese That The Japanese Don't Know" aired on Yomiuri TV (every Thursday from 23