One possible plot could be the challenges they face. Maybe Hermione is initially scared and conflicted about the pregnancy as Fenrir is a complex and somewhat dangerous character. Society might not accept their union, so they have to deal with secrecy and the judgment of others.
Harry and Ron would likely be very shocked and concerned. They know Fenrir is a dangerous werewolf, and they might not understand how Hermione got into this situation. They would probably try to persuade Hermione to leave Fenrir at first.
One common theme is the struggle with the unexpected nature of the pregnancy. Given Fenrir's complex and often villainous nature in the original Harry Potter lore, there could be a lot of internal conflict for Hermione. Another theme might be how the wizarding world reacts to such an unusual pairing having a child.
Fanfiction.net could also be a place to search. However, the quality and content can vary widely. You'll need to search specifically for 'Fenrir and Hermione' and then look for stories that involve the pregnancy aspect among the results. It might take some time to sift through.
In many such fanfictions, Hermione might start by trying to understand Fenrir's situation from a research perspective. She could be using her extensive knowledge of magic and werewolves to figure out a way to help him. For example, she might look into any spells or potions that could ease his lycanthropy symptoms.
Well, it might be good because it could have an interesting take on the characters of Hermione and Fenrir. Maybe it explores their relationship in a unique way that we haven't seen before in the original works.
At the start, Hermione would be appalled by Fenrir's cruelty. She would be enraged that he has caused so much harm to innocent people. But as she delves deeper into getting to know him, she would start to see the complex web of factors that contributed to his behavior. She might see the neglect and discrimination he faced as a werewolf, which could make her feel a bit of pity. However, she would still firmly oppose his cruel actions and try to find a way to either contain or reform him, all while being acutely aware of the danger he poses.
Another theme is the idea of redemption. Many fanfictions explore whether Fenrir can be redeemed through his interactions with Hermione. It's about whether love or friendship can change a character who has been on the wrong path for so long.
Perhaps it's the allure of the 'forbidden'. Fenrir Greyback is a dark and dangerous character, and exploring his relationship with Hermione in fanfiction might be an exploration of the contrast between light (Hermione) and dark (Greyback).
Fenrir might be intrigued by Hermione fanfiction because Hermione is a very intelligent and powerful character. Fanfictions often explore her potential in new and exciting ways, like her delving into different branches of magic or having unique adventures. This would be interesting to Fenrir as he may be curious about how she uses her wits and magic in these alternate scenarios.