Well, some dedicated Fairy Tail fanfiction communities could also be a good place to look. These communities often have a variety of fan - created stories, and if 'lector x female frosch' is a popular enough pairing in that fandom, there's a good chance you'll find something there. Check out forums or groups related to Fairy Tail fanfiction.
One plot idea could be that Lector and Female Frosch are on a secret mission together. They have to overcome various obstacles and in the process, they develop a deeper bond. Maybe they have to retrieve a magical item that is crucial for their world.
Overall, the Levius anime remains quite loyal to the manga. However, there are certain character expressions and fight scenes that might be presented differently for the sake of animation. But the core story and themes are intact.
The charm lies in the unique combination of the traditional saree and the cute, animated style of the girl. It creates a visually appealing and interesting look.
I'm not sure there's a direct connection. Maybe Tara Reid has been involved in some promotion or adaptation related to Archie Comics, but that's just a guess.
Sometimes, in cartoons, a scientific experiment gone right gives the kid the power to become a motorcycle. It could also be that a friendly alien grants them this unique ability as a gift.