It's definitely not something commonly talked about in cartoons or comics or novels (the most recent series I can think of would be Tokyo Raven! Volume 16) but the topic of Japan becoming drunk off the successes of 1939-41 has been mentioned, and explored in how the military and the populace...
"My enemy is not human. My enemy is less than a human."
"Since the earliest dawning of mankind, this is the battlecry...it just happened to be more literal in my case. "