At first I didn't know what "Transformation" meant, but I guess this is related to furries.
There are 3 stories, the introductions to each one of them will describe everything that will happen and there won't be any plot twist so it can be too straightforward.
The first story seems to be inside of a fictional videogame, hence the fake errors, I think this should be more clear. This story is also the shortest.
Second story has a puzzle, it wasn't that hard but it can be a little bit confusing, I had to combine the cows from both windows.
Third story has the most dialogues, and I guess that also happened inside a videogame.
There isn't any music I think.
I didn't spot any bugs, the only obvious thing would be returning to the lobby after clearing a story, maybe you could reset the variable or just don't allow to go back to completed stories in the same save file.
The idea of transformations was pretty bizarre, I think some parts had too much dev explanation, but you were improving your writing during each story so props for that.