I'm not sure specifically as I haven't read it in detail. But generally, it might be about unexpected relationships or events that occur by chance, perhaps a love story that starts in an unplanned way.
I don't have exact information on that. But usually in such novels, there would be at least a male and a female lead whose lives are affected by the accidental events.
Online bookstores such as Amazon or Barnes & Noble could be a good place to look. They have a large inventory and you can search for the specific title. Also, some e - book platforms like Kindle or Kobo might have it as well.
Well, in flash fiction, this phrase might suggest that there are certain boundaries or limitations. It could imply that characters can't hold onto things that aren't rightfully theirs, maybe as a moral lesson or a plot device to create conflict and resolution.
In this word,"this" referred to "this letter". When people wrote letters, they would write " Sincerely Salute " at the end to show their respect and gratitude to the recipient. At the same time, they would also show that they were responsible for the authenticity and accuracy of the letter.