One interesting story could be where Hiccup's dragon blood gives him the ability to communicate with all dragons on a deeper level, not just Toothless. He can sense their emotions and needs from far away. For example, he might be able to calm a wild dragon during a storm just by using his dragon - blood - enhanced connection.
There could be a fanfiction where Hiccup's dragon blood causes him to have dragon - like dreams. In these dreams, he learns ancient dragon secrets, like hidden lairs filled with treasures and powerful artifacts. When he wakes up, he has to figure out how to translate these dream - knowledge into real - world actions to help Berk. He might face challenges from his own people who think he's just having wild fantasies because of his dragon blood.
In some fanfiction, Hiccup's dragon blood might make him immune to certain dragon - related poisons. So when a new villain tries to use a dragon - venom - based weapon against Berk, Hiccup is the only one who can safely handle the situation and find a way to counter the threat. This could lead to him having to prove to his skeptical tribe that his dragon blood is a real asset.
One interesting 'hiccup the dragon prince fanfiction' could be about Hiccup forming an unexpected alliance with the Dragon Prince. Maybe they team up to face a common enemy that threatens both their worlds.
One popular 'hiccup has a legendary dragon' fanfiction might be one where Hiccup discovers a new, extremely powerful and ancient dragon species. He has to learn to communicate with it and together they face an old, long - forgotten evil that threatens Berk.
One interesting story could be about Hiccup exploring a new, uncharted island with Toothless and encountering a rare, magical dragon species. They have to figure out how to communicate with it and earn its trust.
Well, it could be about the character development of Hiccup within the context of being a dragon. Maybe it shows his struggle to adapt to his new form and how it changes his relationships with his friends and family. For example, he might have to hide his new identity at first and deal with the isolation that comes with it.
One popular 'hiccup has dragon eyes' fanfiction might involve Hiccup using his dragon - like eyes to see hidden treasures in the dragon world. He could discover ancient dragon artifacts that were previously unknown.
It can strengthen his bond with Toothless even more. Since they already have a deep connection, the dragon blood could make them almost telepathic. They would understand each other without even having to speak or make gestures.
A really cool shirou dragon blood fanfiction could be one where the dragon blood in Shirou has a mind of its own. It tries to take over his body at times, and Shirou has to constantly battle with it while also dealing with external threats to his city or friends. This internal and external conflict would make for a very engaging story.
One interesting plot could be Hiccup's struggle to control his new dragon form. He might initially be frightened by the sudden transformation and have to learn how to move, fly, and use his dragon abilities. Another plot could involve how his friends and the village react to his transformation. Some might be scared, while others could be in awe. And a third plot could be Hiccup using his dragon form to protect the village from a greater threat that normal human - dragon cooperation couldn't handle.
There are fanfictions where Hiccup uses his unique bond with dragons to solve problems in Berk that the other Vikings can't. For example, a story could be centered around a strange illness affecting the dragons, and Hiccup, with his deep understanding of them, has to find a cure. This often involves his relationship with Toothless and how they work together to overcome the challenges.
Well, in some 'hiccup has a different dragon' fanfictions, the dragon might have special powers not seen in the original. For example, it could have the ability to control time on a small scale. This would change the way Hiccup interacts with it and the adventures they go on.