Weird naming convention with each chapter. Having said that, based on what the dev has done in the past, I suspect each chapter will be a large stand alone type game, which can be played by itself and have no direct effect on the others, or played in any order. As it stands, this one looks to be a prequel, yes, but not in the way you expect. Meaning it's a prequel to future chapters, while the first one we played through was a long prologue that established the various characters and their relationship with the MC, while also serving to establish the universe the game was taking part in.