“....their finest civilians, were sick in the head.”
The level of commitment to what passed as culture at the time makes the most radical Islamist look like a kindergatarten teacher. It’s why we dropped the bombs. Sending our foot troops in to battle Japanese “civilians” would have cost us tens of thousands of American lives.
As recently as 2011 some kind of mass grave was found in Tokyo, having to do with medical experiments done on POWs by some Tokyo medical school. The Japs excavated this, so I doubt we will every hear any more about it.