Dragon Mating Season
Every 10 years, Dragon Season comes around, the time when dragons find and occasionally fight over the best mate possible. Since there are no more dragons around, humans all over Earthland have forgotten about this sacred time, living peacefully for the last 400 years.
Now that the dragon slayers have finally come of age, they are ready for their first season. However, out of all the females in Fiore, only one is deemed suitable for each dragon slayer. That one female will have 6 dragon slayers coming after her, all willing to fight each other to the death for her, all the while being protective, aggressive while infatuated with her.
Lucy Heartfilia, you better start running.