Began with a thought, "Did Urano really die?" From there, started to imagine what would happen if she were to reawaken in Japan. This is set after the events of the Hannelore year 5 side story, so there are some spoilers from the web novel.
A post WN fanfiction for Ascendance of a Bookworm. Alludes to content including the Hannelore Year 5 side story. The concept was simply "What if Urano didn't die. What if Myne re-awoke in her body" and went from there.