Første bind i et større historisk verk om Japan før, under og etter 2. verdenskrig. 
 
"When the Showa Era began, Mizuki himself was just a few years old, so his earliest memories coincide with the earliest events of the Era. With his trusty narrator Rat Man, Mizuki brings history into the realm of the personal, making it palatable, and indeed compelling, for young audiences as well as more mature readers. As he describes the militarization that leads up to World War II, Mizuki’s stance toward war is thoughtful and often downright critical – his portrayal of the Nanjing Massacre clearly paints the incident (a disputed topic within Japan) as an atrocity. Mizuki’s Showa is a beautifully told history that tracks how technological developments and the country’s shifting economic stability had a role in shaping Japan’s foreign policy in the early twentieth century."