Perhaps the story could be about Buffy and Faith being in a relationship first. Then, they decide they want to have a baby together. But it's not easy in their world. They may have to deal with the Watchers Council's disapproval. They'd need to find a safe place to raise the baby, away from the demons and vampires that are constantly after them. And they'd have to learn to rely on each other more than ever as they navigate this new chapter of their lives.
The First Evil could also be a great antagonist. It could try to corrupt the baby, seeing it as a new vessel to spread chaos. Since the baby would be part of Buffy and Faith, it would be a prime target for the First Evil's schemes.
The plot might involve Buffy and Willow dealing with the reactions of their friends. Some might be supportive, like Xander, while others, like Giles, could be more cautious. They could also face a threat from an old enemy who sees the baby as a powerful weapon. As the pregnancy progresses, they grow closer together and learn more about themselves and their relationship.
One possible storyline could be about the moral and emotional turmoil that Faith goes through. She would have to deal with the unexpected pregnancy and the fact that the baby is related to Buffy in some way. Another could be how the Buffy - related characters react to this situation, like Willow trying to help with magic or Giles being his usual wise self in giving advice.
I'm not sure specifically about 'Faith pregnant with Buffy baby' fanfiction. Fanfiction can be quite diverse and spread across many platforms. You could try searching on popular fanfiction websites like Archive of Our Own or FanFiction.net. They have a large collection of Buffy - related fanfics, but it might take some time to find one with this exact plot.
One possible plot could be that Buffy and Spike initially struggle with the idea of having a baby. They might face challenges from the supernatural community as their relationship was always complex. Their friends could be divided in their reactions, some supportive while others worried about the implications. The baby could inherit unique powers, leading to various adventures as they try to protect it from those who might want to use its powers for evil.
One idea could be a magical competition. They compete to see who can master a new and dangerous spell first. Buffy might use her traditional training and moral compass, while Faith could be more reckless in her approach, which would create a lot of tension.
The plot might also involve the reactions of their friends and the dragon community to the new baby. Some dragons could be overjoyed and offer help, while others might be jealous or worried about the potential power the baby could grow to have. Spyro and Cynder would then have to deal with these different reactions while taking care of their little one.
Well, one possibility could be that the baby has some special powers right from the start. Maybe it can communicate with the vampires in a unique way that no other vampire - human hybrid has before.
In the fanfiction, the story could be about how Gumball and Penny's baby has some unique abilities. Since they are from different species in the original show, the baby might inherit a combination of their traits, which could lead to interesting adventures. For example, the baby could have Penny's angelic powers and Gumball's wacky sense of humor, getting into all sorts of fun situations.
Well, perhaps the fanfiction could focus on how Magnus and Alec adjust to having a baby in their lives. Alec, being a shadowhunter, might have some traditional ideas about parenting which could clash with Magnus's more free - spirited and magical approach. And they could grow and learn from each other throughout the process.