These bombings were all horrifying.
Because you are open minded and you live in Japan rather than America, I'm going to bring up another theory that I only learned about last year.
At first I was a bit perplexed by it, but the more I looked into it, the more it checked out. And that is the theory that Nagasaki and Hiroshima were destroyed using regular bombs, similar to the ones used on Dresden and Tokyo.
And where does this lead? - straight to the idea that atomic bombs are a con-job, and they don't exist at all. The evidence for this is really solid.
I did a post on this 11 months ago but it wasn't very popular :)
https://steemit.com/life/@sift666/atomic-bombs-are-a-complete-con-job-they-don-t-even-exist
Here is a photo of Dresden