As a prototype volume this was very good, maybe even too good. I enjoyed reading toilet bound volume 0 more than the actual series. The main series has too slow of pacing for my liking and reading something faced pace was very enjoyable. I would call this a rough draft for toilet bound that I wish was the actual thing. For the final chapter the author writes a conclusion for the 4 chapters and I hope that the author expands on that ending for the actual series. I can see it being a very good conclusion for the series if It follows the same structure.You don't have to read this volume, but if your're a fan of the series I would recommend reading because you can see how the author has improved and there's faster pacing. Overall I enjoyed this more than the actually series and I think it's a solid 8/10.