One interesting story could be about a magical teat that has the power to heal any wound in a supernatural world. It might be protected by a powerful spirit.
In some fanfiction, a group of supernatural beings might fight over a teat that is said to contain the essence of their kind. This teat could be the key to unlocking new powers or a way to bring peace among the different factions in their world.
There could be a fanfiction where a character discovers a hidden teat in a enchanted forest that grants them the ability to communicate with animals, which is a common supernatural element. This discovery then leads the character on an adventure to save the forest from an evil force.
Well, a common theme is the origin stories of the supernatural beings. Fanfiction often delves into how vampires, werewolves or demons came to be in the Supernatural world. Also, crossovers with other fictional universes can be a theme. Imagine Supernatural characters meeting those from Buffy the Vampire Slayer. And then there's the theme of redemption, where a once - evil character tries to make up for their past misdeeds within the context of the Supernatural story.
First, think about the concept of the teats. Are they normal - looking but with supernatural powers? Or are they something completely out of this world? Then, create your characters who will interact with these teats.
First, you need to be really familiar with the Supernatural universe. Watch the show, read other fanfictions to get a feel for the style and the world. Then, come up with an interesting concept. It could be a new case for the characters to solve or a new power that a character discovers. Just start writing and don't worry too much about making it perfect at first.
One interesting 'angel supernatural fanfiction' story could be about an angel who falls in love with a human and has to choose between his celestial duties and his new - found earthly emotions. Another might involve an angel teaming up with a group of hunters to fight against a powerful demon that threatens the balance between heaven and earth. There could also be a story where an angel loses his powers and has to learn to survive in the human world relying solely on his wits.
One interesting supernatural purgatory fanfiction could be about a character's journey to redeem themselves in purgatory. They might face various trials that are related to their past sins in the 'Supernatural' universe. For example, a hunter who has killed many supernatural beings out of vengeance has to confront the souls of those he wronged in purgatory.
One interesting story could be about the characters facing an unexpected new villain. Maybe it involves a powerful demon that has a unique connection to Sam or Dean's past. It could add a whole new layer of mystery and danger to their adventures.
One interesting story could be about a new character who has the power to control time and how they interact with the main characters from 'Supernatural'. They might use their power to go back in time to prevent some of the tragedies that happened in the show.
One interesting story could be about a reader who gets pulled into the Supernatural world and has to team up with Sam and Dean to fight a new, powerful demon. The reader brings in unique perspectives from the real world that help them in their battles.
Some hetalia supernatural fanfiction stories focus on the idea of the nations being guardians of supernatural realms. For instance, Russia could be the protector of a frozen, magical land within his territory. In some fanfictions, there are crossovers with other supernatural universes. Maybe the hetalia characters meet characters from shows like 'Supernatural' and they have to team up to solve a mystery or fight a common enemy. These crossovers can bring new and exciting plotlines.
One interesting aspect could be the unique take on characters' relationships. For example, in some fanfictions, a lactating character might add a new layer of vulnerability and nurturing to their dynamic with other characters. It could explore how other supernatural beings react to this very human - yet in a supernatural context - situation.