Volume
From volume 2 onwards the story will follow the canon.
Until then, there will be around 20 to 30 chapters to situate and introduce the protagonist.
There will be no major changes to the central story, but many things will change.
The chapters start to be published tomorrow and I will try to follow a routine of 1 chapter per day, with at least 1500 words.
If you like the story and it is well received I will consider setting goals for extra chapters, but that will take time.