I read a book about this time period. It was interesting.
https://www.amazon.com/Catastrophe-Investigation-Origins-Modern-Civilization/dp/0345408764
Just added that book to my reading list. I love reading about the middle ages but I don’t know much about that particular period.
I put This on my List,
Thanks.
The author posits that a volcano erupted in Indonesia (Java) that year. This was not a bad hypothesis when the book was written (around 2000), but today we know (e.g. from this news article) that the eruption happened in Iceland or North America. In any case, the volcanic eruption of 536 literally re-ordered the world and forms an inflection in world history.