In this fanfiction, an interesting plot point might be Hiccup's role in the dragon world. Maybe he has some special knowledge from his human life that gives him an edge in dragon society. For example, he could know about human strategies and use that to help the dragons in their battles or in dealing with human threats. Additionally, his transformation could be part of a bigger prophecy. The other dragons might initially be skeptical of him, but as he proves himself, he could become a key figure in their world.
One interesting plot point could be how Hiccup adjusts to his new dragon form. He might have to learn to fly and use his new abilities, like breathing fire or having enhanced strength. Another could be his interactions with other dragons. Since he was once a human, he might have a different perspective compared to regular dragons, which could lead to unique relationships.
Often, the bond between Hiccup and the Dragon Queen is a central plot point. For example, in many fanfictions, they start off as strangers and gradually learn to trust each other.
There could be Toothless. Even though Hiccup is now a dragon, his connection with Toothless from his previous human life might still be there. Toothless could play a crucial role in helping Hiccup adapt to his new form.
One interesting plot point could be the protagonist using their prior knowledge to change certain events in Sasuke's life. For example, they might try to prevent Sasuke from leaving the village earlier than he did in the original story.
One interesting plot point could be the main character adjusting to Broly's immense power. For example, they might struggle at first to control the Saiyan's brute strength during battles.
In this novel, the dragon's egg's hatching process is full of mystery. After hatching, the dragon's exploration of its own identity and purpose is a major plot point. It has to figure out how to survive in a world full of unknowns, and as it grows, it gets involved in a series of adventures that are both exciting and dangerous. The power - ups it gets during different adventures also keep the story interesting.
Another plot point might be the relationships the reincarnated OC forms. They could have a different dynamic with Ash's friends like Brock and Misty. The OC might introduce new ideas or ways of thinking to the group, which could lead to some really fun and unexpected adventures.
One interesting plot point could be how the character adapts to the RWBY world with the help of the system. Maybe they use the system to unlock unique abilities or powers that are different from the regular characters in RWBY.
Another interesting plot point could be a misunderstanding. Maybe Astrid sees Hiccup with another girl (who is actually just a friend helping with dragon research). Astrid gets jealous and starts to distance herself from Hiccup. Hiccup is confused at first but then realizes what's going on and has to work hard to win Astrid back. This creates a lot of drama and tension in the story.
A plot point could be a misunderstanding. Maybe Astrid sees Hiccup spending a lot of time with a new female dragon rider and gets jealous. This causes a rift between them, but then they have to work together to save Berk from a new threat. During this, they clear up the misunderstanding and their love becomes stronger.
One interesting plot point could be the discovery of the pregnancy. Hiccup might initially think Toothless is ill, but then realizes what's actually happening. Another could be the search for a way to reverse it if he's not ready for such a situation. Maybe he travels to a far - off land in search of a wise old dragon or a powerful witch.