Dreams.

I had an incredibly detailed sequel to a dream I once had, with the same characters, even more detailed descriptions of their personalities, influenced by the first part, a continuation of their story, an unusual twist in the middle, and an incredible, cathartic twist at the end, explaining the events of both the first and second parts. After that, I woke up and doubted whether it was a sequel; perhaps it all happened within the same dream, or maybe the first part was just a dream I had earlier that night? So, I immediately carefully weighed my feelings, but nevertheless came to the conclusion that it was still a full-fledged sequel.
Without going into details, the essence was that I, a random bum who crawled out of the swamp, was drawn into unusual events, as a result of which I realized that I was not an ordinary bum, but a person who caused these events and was punished by the loss of memory and being cast down to the bottom. This has never happened anywhere, ever! However, not all the consequences of my actions turned out to be destructive; some ultimately had a very positive impact and largely saved the characters affected by them. There was a certain controversy hidden in this.