Specifically, it's a story about a veteran Harry Potter fan who traveled back in time to his parents' childhood. In fact, I originally wanted to write a GGAD story, so I had a female protagonist. This heroine is me and not me. The heroine's world view is basically the same as mine.
Maybe there will be some skills of Swordsman Three Thousand Flowers, I haven't decided whether to write Swordsman Three+HP yet.
Concept: GGAD