I'm not sure specifically as I haven't read it. It might be about a wyvern, which is a kind of dragon - like creature. Maybe it involves a mystery surrounding this wyvern, like its origin, its powers, or some secrets it holds.
I'm afraid I can't tell you the author of 'the wyvern mystery novel'. It could be an indie author or someone relatively unknown. If it's a new release, it might not be widely known yet. However, you can try reaching out to local bookstores or contacting publishers to see if they can provide you with the author's name.
Wyverns in Monster Hunter Stories are often large and powerful. They typically have strong physical abilities like high attack power and tough scales for defense. Their flying ability gives them an advantage in combat, allowing them to quickly swoop in on opponents or escape danger.
One common theme is the exploration of the unknown. Since wyverns are often mysterious creatures, novels about them usually involve characters exploring areas or secrets related to wyverns.
The Dark Wyvern Castle might be a place filled with mystery. It could have been home to powerful wyverns in a fictional world. Maybe it was a fortress that held great treasures, or a place where dark magic was practiced. But without more context, it's hard to say exactly what the story is.