Starting From Zero's magic book manga did not have a chapter 23 at the moment because the progress of animation and manga was different. When the animation was updated to chapter 19, it had already caught up with the progress of the manga, so it did not continue to produce chapter 23. The original intention of the manga author was to commemorate his university classmates, so there were many memories and plots in the manga. In the animation production process, due to time constraints and production costs, some plot and character development were omitted. This was understandable. After all, the purpose and style of animation and manga were different.