One possibility is that the story focuses on how Raven and Beast Boy adjust to being parents. They might face difficulties like protecting their baby from villains who want to use the baby's powers for evil. The baby could also be a key to uniting different factions in their world, so there would be a lot of political intrigue around it as well.
It could be Trigon. Since Raven has a connection to him, he might see the baby as a way to get revenge on Raven or as a powerful tool for his evil plans. He could try to corrupt the baby's powers for his own use.
A fanfiction could also focus on their relationships outside of being superheroes. They could be having a normal day at the Tower, just hanging out. Starfire could be trying to cook something new from her home planet, Raven could be reading a book in the corner, and Beast Boy could be cracking jokes, which at first annoys Raven but then she starts to laugh.
A plot could involve an unexpected pregnancy. Beast Boy and Raven are in the middle of fighting some new villains when Raven discovers she's pregnant. This throws them off balance. They then have to figure out how to protect the baby while still being superheroes. They might have to hide Raven away for a while to keep her and the baby safe. Their relationship also deepens during this time as they face this new challenge together. Eventually, they have the baby, and it becomes a symbol of hope for the future in their world.
Well, a popular Beast Boy Raven lemon fanfiction is 'A New Beginning'. It starts with an unexpected encounter between them that sets off a chain of events leading to a closer relationship. In this fanfic, the author does a great job of showing the emotional growth of both characters. Also, 'Love in the Midst of Chaos' is quite good. It's set during a chaotic time in their world and their love story unfolds in a really engaging way.
One great 'Beast Boy and Raven love' fanfiction is 'Shadows and Green'. It beautifully explores their relationship development, from hesitant glances to deep emotional connections. The author does an amazing job of portraying their personalities within the context of the story.
One idea could be a story where Raven, Beast Boy and Terra go on a quest together to save their world from a new, powerful enemy. Along the way, Raven and Beast Boy's relationship could be explored more deeply, while Terra struggles with her own powers and how she fits in with the group.
A great fanfiction concept could be a time - travel story. They accidentally get sent back in time and have to find a way to get back to their own era. Along the way, they meet younger versions of themselves or other important characters. Beast Boy might be excited to see how things were in the past, Raven could be more cautious, and Starfire would be curious about the different cultures and technologies.
A good fanfiction about their kiss could also delve into the reactions of the other Teen Titans. Maybe some are happy for them, while others are a bit surprised at first. It can add more depth to the story and show how their relationship affects the whole team dynamic.
One great Beast Boy x Raven fanfiction is 'Soulmates in the Tower'. It delves deep into their relationship, exploring how their personalities, which seem so different on the surface, actually complement each other in many ways. The author beautifully portrays their growing understanding and attraction for each other.