Oddly the art is largely Japanese in style, not just the musume (e.g. "girl") images but that first one.
Between that accident and the year 2000 there were about 60 criticality accidents causing about 20 fatalities
https://www.nrc.gov/docs/ml0037/ML003731912.pdf
After a software project failure that overturned my life I got interested in the quality movement, Deming, Toyota Production System and all that. I was also interested in nuclear energy, actually opposed to it at that time, an opinion I have changed.
Before the Fukushima accident I became aware that Japan was leading the world in nuclear accidents, especially this criticality incident
https://world-nuclear.org/information-library/safety-and-sec...
as well as the comedy of errors at
https://en.wikipedia.org/wiki/Monju_Nuclear_Power_Plant
which I could summarize as "makes Superphenix look like a huge success"
Causes floated for that were that (1) Japan was more aggressive at developing nuclear technology post-1990 more than any country other than Russia (who is making the FBR look easy today) and (2) the attitudes and methods that served Japan well in cars and semiconductors served them terribly in the nuclear business. Workgroups in a Japanese factory, for instance, are expected to modify their techniques and tools to improve production but takes detailed modelling and strict following of rules to avoid criticality accidents.