So just wanted to say that with the exception of the Morgan Trading Company story, all of the short side stories out so far fit in nicely to the existing novel. They provide a nice supplement for anyone who's been collecting all of this. The trading company story is the only one so far that doesn't slot in nicely, and that's mostly because that particular episode ends with them leaving in the main novel, so unlike all the other stories where there's a clear cut gap in the main story where they slot in, this one tries to slot itself into the end of the chapter.
The bonus stories from the first two volumes of the manga are my favorites ones out so far, I'm hoping that we'll either get a side story or a main story that goes into more detail about slime Tabuchi's tale since it sounds like it greatly impacted Ryoma.