One possible fanfiction could be that Hope discovers she's pregnant unexpectedly. She's initially scared as she and Landon are still young and facing many challenges in the supernatural world. Landon, on the other hand, is overjoyed and promises to be there for her no matter what. They then start preparing for the baby's arrival, all while dealing with the threats from the various dark forces in Legacies.
One popular trope is the 'enemies to lovers' scenario. Given their complex relationship in the show, it's often explored in fanfiction where they start off at odds but gradually fall in love. For example, they might be on opposite sides in a battle at first and then realize their feelings for each other.
Fanfiction.net is also a good place to look. There are many writers who contribute to the 'legacies' fandom, and you might come across some interesting Landon and Hope fanfictions. Just use the search function to narrow down your results.
The plot could start with Hope realizing she's pregnant. She tells Landon, and they both have mixed emotions. They decide to keep it a secret at first. As the pregnancy progresses, Hope starts to have strange visions related to the baby's future. Meanwhile, they have to deal with the usual Legacies drama like attacks from monsters. Landon tries to protect Hope more than ever. Eventually, they might have to reveal the pregnancy to their friends when they need help to keep the baby safe from an ancient evil that has an interest in the unborn child.
It might start off rocky. Klaus is very protective of Hope, so he could be hostile towards Landon at first. But as time goes on, if Landon shows he's truly good for Hope, Klaus could slowly warm up to him.
Well, perhaps Klaus will initially be skeptical of Landon as Hope's boyfriend. He might test Landon's loyalty and strength. Maybe there'll be some tense moments where Klaus's protective nature for Hope clashes with Landon's attempts to prove himself worthy of her.
Yes, there are quite a few. You can start by looking on fanfiction.net or Archive of Our Own. Just search for 'legacies male oc x hope' and you'll find a variety of stories with different plotlines and writing styles.
One common theme is the struggle between their different natures. For instance, if the male OC has a very different magical ability or background compared to Hope, they might face challenges in their relationship because of that. Also, themes of loyalty and betrayal can come up. If there are other characters trying to drive a wedge between them, it can test their loyalty to each other. And of course, the theme of growing up and dealing with the responsibilities that come with their powers is also quite prevalent in these fanfictions.
One common theme is the struggle against supernatural forces while maintaining their relationship. Given their world filled with magic and monsters, it's often a central plot point.
You can try fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfics, and you can simply search for 'Hope Mikaelson x Landon Kirby' in the search bar. There are often filters to sort by popularity, rating, etc.