How about the baby of Hiccup and Astrid in How to Train Your Dragon fanfiction?

Start by imagining unique adventures or scenarios for them. Focus on their relationship and character growth. Let your creativity flow!

One possibility could be that they face challenges in protecting their unborn child from the threats in their dragon - filled world. For example, they might need to find a safer place to raise the baby, away from the more dangerous dragons or villains. Maybe they also struggle with how to balance their duties as dragon riders with the upcoming responsibilities of parenthood.

It's all about imagining their adventures in a contemporary setting. You can have them dealing with modern problems while still retaining their dragon-training skills.

Often, the betrayal could stem from a secret Astrid keeps that accidentally harms Hiccup's interests or trust. Maybe she makes a decision without consulting him that has negative consequences for him.

I think a good way is to think about what kind of personality traits Baby Hiccup would have and build the story around that. For example, if he's particularly brave or mischievous, and how that affects his dragon-training journey.

They could have a journey to find a special herb or something that is believed to ensure a healthy pregnancy in the world of How to Train Your Dragon. This would be an adventure filled with encounters with different dragons and terrains.

One great fanfiction idea could be that Hiccup and Astrid go on a secret adventure together in the Hidden World. Along the way, they face challenges that make them realize their love for each other even more deeply. They might share a tender moment while looking at the beautiful, undiscovered landscapes of the Hidden World.

A common theme in these fanfictions could be the moment of the kiss itself. It might be described as a passionate, long - awaited moment. For example, perhaps it happens after a great victory against a dragon threat, with the excitement and relief in the air adding to the intensity of the kiss.

You could start by imagining new adventures for them. Focus on their relationship and character growth.

First, get familiar with the characters' personalities and the world of How to Train Your Dragon. Then, come up with a plot that combines their relationships and the magic of the dragons. Add some twists and turns to keep readers engaged.