Another challenge could be their past relationships or unrequited crushes. Maybe Astrid had a brief attraction to someone else in the village before, or Hiccup was too focused on his dragon - training to notice his feelings for Astrid. These past distractions could make it difficult for them to fully realize their love for each other and get together.
The social status in Berk could be a problem. Astrid is a well - respected warrior and Hiccup was once an outcast. There might be some in the village who don't think they should be together. Also, their responsibilities towards Berk and the dragons could get in the way. They are both busy with different tasks, leaving little time for them to explore their feelings for each other.
One challenge could be the time that has passed. They may have changed a lot during their time apart, and they need to get to know each other again. For example, Allison might have new interests or a different lifestyle now.
Trust could be a big issue. Since they've broken up before, there might be lingering doubts. Alec might worry that Magnus will leave again, and Magnus might be afraid that Alec will let the rules of the Shadowhunters come between them. They need to work through these insecurities if they want to get back together.
Well, perhaps during a festival in Berk. The whole village is celebrating and there are lights and music everywhere. Hiccup and Astrid find themselves alone near the edge of the celebration. Hiccup takes Astrid's hand and leads her to a quiet spot overlooking the ocean. He tells her how much she means to him, how she has changed his life. Astrid is moved and they embrace, finally getting together as a couple.
In the fanfiction, Hiccup and Astrid's secret love has several challenges. For starters, their duties to the village often pull them in different directions. Also, there are those in the village who have different ideas about who they should be with. Their families' expectations could also pose a problem. And, of course, there's always the risk of a dragon - related emergency interrupting their private moments together.
Well, first off, there could be the challenge of adjusting their own relationship. They're used to just the two of them, and now a baby is coming. There might be arguments about how to raise the child. Physically, Astrid will have to deal with the discomforts of pregnancy. Hiccup will need to balance his usual duties with taking care of Astrid. And they'll also have to think about the future of their village or community in relation to their new family situation. It's a whole new set of responsibilities and changes that they'll need to navigate together.
One possible challenge could be balancing their duties. Hiccup might be busy with leading the tribe, and Astrid could be involved in training the warriors. They need to find time for each other. Another challenge could be dealing with family expectations. Maybe there are certain traditions they need to uphold as a married couple in the tribe. Also, external threats to the tribe might put a strain on their relationship as they have to focus on protecting their people.
One challenge could be dealing with the other students' reactions. Most students at Hogwarts have pre - conceived notions about Harry, Hermione and Draco. For Harry and Hermione, Draco has always been seen as a bit of a bully. And for Draco, being friends with a Gryffindor like Harry and a Muggle - born like Hermione goes against his family's beliefs. So they'd have to face a lot of gossip and maybe even some hostility from their peers.
A fanfiction might depict their marriage as a union that not only unites them but also brings new hope to Berk. As they get married, they could announce new plans for the village. Maybe they plan to build a new school for the children, teaching them both the ways of the Vikings and the importance of peace with the dragons. Their marriage could be seen as a symbol of a new era in Berk's history, where humans and dragons live in even greater harmony, and Hiccup and Astrid lead by example with their love and partnership.
There are many fanfictions out there about Hiccup and Astrid's wedding. Some might focus on the elaborate preparations, like Astrid choosing her wedding dress which could be a traditional Viking style with a modern twist. The fanfic could also show Hiccup being nervous but excited at the same time.
One major challenge would be the public perception. Snape has a rather dark reputation in the wizarding world, and Harry is a hero. People might not understand or accept their relationship, let alone them having a family. Their family could face discrimination or be the subject of rumors.