Well, you could have a story where the coiling dragon is in danger. Some dark force from another part of the cosmos is trying to capture it and use its power for evil. The main character, who might be a young hero or heroine, has to find a way to save the dragon. This could involve them having to master new powers, make alliances with strange creatures, and journey through uncharted parts of the cosmos. Along the way, they learn about the true nature of the lord of the cosmos and how the coiling dragon fits into the grand scheme of things.
Perhaps a group of intergalactic pirates. They've heard about the power of the coiling dragon and want to sell it to the highest bidder in the cosmos. They're not interested in the lord of the cosmos or the balance of the universe, just in getting rich. They could be very ruthless and use advanced weaponry to try and capture the dragon. Their leader could be a particularly cunning and brutal character, willing to do anything to achieve their goal.
One idea could be exploring a new, powerful magic that emerges in the Fairy Tail Cosmos universe. Maybe a magic that combines the elements in a completely unexpected way, like a fusion of water and lightning magic to create a 'electro - aqua' magic. This could lead to new character developments as they struggle to master or deal with this new power.
One interesting plotline could be the exploration of different magic systems in the 'coiling dragon' universe that are not fully explored in the original work. For example, how certain characters develop unique spells based on their individual talents.
In a fanfiction plot, the snakes coiling Sakura might be a sign of a prophecy. Sasuke, being the one associated with the snakes, has to help Sakura fulfill the prophecy. This journey involves them facing various challenges together, strengthening their bond. As they overcome each obstacle, their relationship evolves from just comrades to something more romantic.
Another plot idea could be a time - traveling adventure. What if the characters from 'the thief lord' were transported to a different era? They could face new challenges and learn different things about themselves and their relationships.
One interesting plot could be the dragon being reborn into a different era and having to adapt to new magical rules. For example, if it was reborn in a world where magic is scarce, it would have to find ways to regain its former power.
One idea could be a dragon rider who discovers a new type of dragon with unique abilities. For example, a dragon that can teleport short distances. This would add a whole new dynamic to the story as the rider has to figure out how to use this ability in battles or for exploration. Another plot could involve a group of dragon riders from different regions coming together to face a common threat, like a powerful dark sorcerer who wants to control all the dragons. They have to overcome their cultural differences and learn to work together.
One idea could be a young hero who has to conquer a dragon to prove their worth in a kingdom. The hero might start off as an underdog but discovers a special power or weapon along the way.
The summer dragon could be the key to saving a kingdom that is suffering from an eternal summer. A group of adventurers sets out to find the dragon and convince it to use its power to restore the normal cycle of seasons. Along their journey, they face many challenges like treacherous terrains and other dangerous magical beasts.
Well, a great plot for dragon maid fanfiction could involve the dragon maid learning about a new power she has. For example, she discovers she can communicate with other magical creatures. Or there could be a story where she tries to throw a surprise party for her master but everything goes wrong in a humorous way. Also, a plot where she teams up with other maids (maybe from different magical backgrounds) to solve a mystery in the town they live in.