I'm not entirely sure as I haven't read it specifically. But generally, a 'vampire high novel' might be about vampires in a high school setting. It could involve vampire students trying to fit in among normal humans, dealing with typical high school problems like relationships and grades, all while hiding their true vampiric nature.
Well, first, create some interesting vampire characters with their own personalities. For example, a brooding vampire who's trying to fit in at high school but is constantly tempted by blood. Then, set the high school scene. It could be a regular high school where vampires are secretly attending. Add some conflicts like the vampires having to hide their true nature from humans, or a love triangle between a human, a vampire, and a werewolf (to make it more exciting).
Since I haven't read it, I can't say for sure. But it could have a young vampire as a main character, perhaps one who is different from the rest in some way, like having a special power or a different moral code.
Perhaps it starts with a strange book in the school library. A curious student finds an old, dusty book that tells the story of vampires. As they read it, they unknowingly summon a vampire into the high school world. This vampire then starts to interact with the students, causing all sorts of chaos and mystery in the hallways and classrooms.
You might encounter a vampire in High School Story through special events or quests. Sometimes, completing certain tasks or achieving specific goals could lead to their appearance.
Well, getting a vampire in High School Story could involve solving puzzles or uncovering secrets. Maybe there's a particular club or activity that attracts them. You'll have to be observant and adventurous to find out.
I think you might have a chance if you join some secret clubs or attend strange parties that are rumored to have vampire connections. But be careful, it could be dangerous!
You might consider having a new student arrive at the high school who is secretly a vampire. Or perhaps there's an ancient relic on school grounds that awakens vampire powers in someone.
One way could be that a student stumbles upon an ancient book with a forbidden ritual to summon a vampire. Or maybe there's a secret society within the school that knows the way to bring a vampire into the story.