Okay the easiest way to develop the story is to make a sketch that represents a segment of the story. On the consecutively numbered (1-2-3 etc.) image write that portion of the story. As you put these into a folder they will line up. It will be easy to make a pdf or other visual media...OR see below.
I just started looking at the tuts for OpenShot video editor and for RedNote book for pdf https://rednotebook.sourceforge.io/
RedNotebook is a modern desktop journal. It lets you format, tag and search your entries. You can also add pictures, links and customizable templates, spell check your notes, and export to plain text, HTML, Latex or PDF. It means the file can be saved to your desktop in the above formats. This seems to be a great way to do a Graphic novel (Manga) wouldn't you agree? So guys I'm going to let you run with it, have fun and if you need advice and/or a gentle and kind critique let me know.
W :^)