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.
Agnus Comics usually have a unique style that combines fantasy and adventure elements. The content often features heroic characters facing various challenges.
The cartoon of a dog jumping could feature it jumping in a competition, trying to win a prize. Or perhaps it's jumping to escape from something scary. Maybe it's just jumping around joyfully for no particular reason, because dogs love to be active and playful.
The story might be about the adventures and challenges of a dog who becomes a king in a fictional world. Maybe it shows how he gains power and uses it to protect his kingdom.