Barefoot Gen was also adapted as an anime movie and it's... rough. Another heart-wrenching anime related to the bombings is Grave of the Fireflies.

Grave of the Fireflies is about the Tokoyo firebombing raids btw.

*Kobe, not Tokyo. FWIW.

Post-war Japan has had some really good marketing. You'll never see films or comics depicting Nazi Germany under Allied bombing and the suffering of those on the homefront loyal to the Third Reich; anybody who who tried to create a "Barfuß Jens" or "Das Grab der Glühwürmchen" would be torn to shreds for being pro-fascist.

Yet ordinary Japanese people conscripted into the Imperial Japanese Army committed the equivalent of the Holocaust across Asia, widespread atrocities terrible enough to revolt even Nazi observers. It's not like they would have treated Westerners any better either; look at what they did to Allied POWs. But whitewashing with articles and films, not even that many really, and today Westerners are expressing "understanding and empathy" to the wartime Japanese, loyal to their country and divine Emperor. I mean, just, yikes.

Understanding and empathy are good but let's not be uncritical about what their purpose is or unaware of the larger historical context.