A possible plot idea is that Tsukune's half - vampire status starts to attract the attention of vampire hunters. He has to prove that he's not a threat while also trying to figure out more about his vampire heritage. He could also form an alliance with some of the vampires against a common enemy, like a powerful and evil vampire who wants to take over the town or something. For example, he teams up with a group of young vampires who are also trying to find their place in the vampire world.
Tsukune could be in a situation where his human friends start to suspect that he's different. So he has to come up with creative ways to keep his secret. Meanwhile, he discovers that there are certain ancient vampire artifacts that can either enhance or suppress his powers. He embarks on a quest to find these artifacts, all while being chased by those who want to use the artifacts for their own evil purposes.
Moka Akashiya would be a great character to include. She's a vampire herself and could be a love interest for Tsukune, adding a romantic sub - plot. Kurumu Kurono, a succubus, could also be included. Her flirtatious nature would create some interesting dynamics with Tsukune. Then there's Yukari Sendo, a young witch. Her magical abilities could be useful in various situations that Tsukune gets into. For example, when they are facing a powerful enemy, Yukari could use her magic to create distractions or defenses.
Perhaps Tsukune is turned into a vampire as part of a ritual gone wrong. In the fanfiction, he could be the key to some prophecy that the vampires are trying to fulfill. As he turns, he starts to have visions related to the prophecy. He then has to decide whether to embrace his new vampire self or fight against it to protect his non - vampire friends.
There could be fanfictions that take Tsukune Aono on different adventures. Maybe he has to face a new and powerful vampire enemy, or he gets involved in a mystery that only his unique vampire - human hybrid abilities can solve. These types of stories often attract a lot of readers as they show Tsukune in more complex and exciting situations.
Kurumu Kurono is also a main character in a lot of these fanfictions. As a succubus, she has her own motives and feelings towards Tsukune, which can lead to some interesting storylines. And then there's Yukari Sendo, a young witch. Her presence adds an element of magic and mystery to the fanfiction stories.
One plot idea could be Tsukune and Ria going on a journey together to discover a hidden power within the Rosario Vampire world. This could involve them facing various monsters and challenges along the way, and their relationship growing stronger as they rely on each other.
There could be a fanfiction where Tsukune and Moka accidentally switch bodies. This would lead to a lot of comical situations as they try to adapt to each other's lives. Moka in Tsukune's body would have to deal with human school life and Tsukune in Moka's body would have to handle the vampire society. Additionally, a plot about a mysterious prophecy that involves both of them and their fates being intertwined with the future of the vampire - human relations could be really engaging.
A more romantic plot could involve Yukari developing deeper feelings for Tsukune and trying to confess her love in a world full of supernatural distractions and challenges. It could show how their relationship might develop in a different way from the original story.
One plot idea could be that Vampire Tsukune and Inner Moka have to team up to fight a new and powerful enemy that threatens the entire monster school. They start to train together and during this time, they discover new powers within themselves and also grow closer on an emotional level.
Some Tsukune Aono dragon fanfictions focus on his relationships with other characters in the context of his dragon nature. For instance, how his dragon side affects his relationship with Moka. Maybe his dragon instincts make him more protective of her, or there could be some sort of power - based dynamic between them that is explored in the fanfiction.
Well, a plot idea could be that Kurumu and Tsukune get trapped in a time - loop. They keep repeating the same day over and over, and in the process, they learn more about each other's true selves. Each repetition of the day brings them closer together as they figure out how to break the loop.