Just stop, they were deep into Emperor worship and as adults are responsible, they knew their fellow sons and fathers as soldiers and information was not a complete vacuum. Your logic is the same weak excuse used by NAZIs and German citizens for lack of accountability.
The culture absolutely was bitterly xenophobic and a supremist caste system enforced to its core. Culture matters and theirs enabled those atrocities. Take your liberal bedwetting apologetics elsewhere.
The only ignorance was yours assuming I am not informed of that Japanese period historically and culturally.
Again as I posted previously, I’m not making excuses for the atrocities. I wrote and which you simply can’t understand is that news of those atrocities were tightly controlled by the government. The average Japanese citizen was supporting the war effort.