In a 'supernatural restaurant fanfiction', the restaurant could be haunted. But instead of scaring customers away, the ghosts are part of the attraction. They help the chef by passing on ancient recipes that have been lost in the mortal world. The restaurant also holds monthly 'ghostly banquets' where only those with a special invitation (usually given by a friendly spirit) can attend and taste the most otherworldly cuisine.
Perhaps the supernatural restaurant is a place where humans and supernaturals come to make deals. The food served is like a form of currency. If a human wants a favor from a witch, they have to offer a meal from the restaurant that is made with rare and magical ingredients. And the restaurant has a strict code of conduct that both humans and supernaturals must follow while inside.
The owner of the supernatural restaurant could be a main character. She is a centuries - old vampire who has seen the world change but has always maintained this one special place. And there could be a detective who is investigating strange disappearances that seem to be related to the restaurant. As he digs deeper, he realizes that the world of the supernatural is far more complex than he thought.
In this fanfiction, Naruto's restaurant could become a meeting place for ninjas from different villages. His restaurant would be known not only for the food but also for the stories shared by the ninjas. Naruto himself would be the heart and soul of the place, greeting every customer with his big smile and sharing his own adventures. He might even hold special events like ninja - style cooking competitions to attract more people.
One idea could be that the Winchester brothers from Supernatural are investigating a series of strange murders in Gotham City. They cross paths with Batman who initially is suspicious of them. Eventually, they realize that a demon is behind the killings and they team up. Batman provides his detective skills and combat abilities while the Winchesters use their knowledge of the supernatural to defeat the demon.
One possible plot could be that in this special restaurant, time stops randomly. A character with a big tit (assuming it's a unique physical trait for this character) might be a waitress. When time stops, she discovers she can move around freely and starts to explore the secrets of the restaurant, like hidden rooms or magical ingredients.
One plot idea could be Ketch getting involved in a time - travel adventure within the Supernatural universe. He could go back in time and interact with the Winchester brothers at different points in their lives, changing the course of events in unexpected ways.
One plot idea could be that the Winchester brothers have to face a water - dwelling supernatural creature while on a boating trip. Maybe it's a mermaid - like being that lures sailors to their doom, and they have to figure out how to stop it without getting trapped in its watery lair.
One idea could be a character reincarnating as a powerful supernatural being in a different era and having to adapt to new powers and a new world order. For example, a modern - day human reincarnates as a vampire in the Victorian era and has to deal with the strict vampire society rules while also trying to figure out their new vampiric abilities.
One idea could be that Mjolnir has a connection to an ancient supernatural being in the Supernatural universe. For example, it might be the key to sealing away a powerful demon that was once imprisoned by the Norse gods. The Winchester brothers could find out about this connection and have to protect Mjolnir from various creatures who want to use it for their own evil purposes.
One unique idea is that the purge only affects those with supernatural abilities. So, all the witches, vampires, werewolves, and the Winchester brothers are the main targets. They have to band together, despite their usual differences, to survive the night and fight against the humans who are out to purge them.
Another plot could involve a Pokemon with psychic powers so strong that it can create entire alternate realities. Trainers get trapped in these realities and have to figure out how to escape while also dealing with the strange Pokemon that exist there. This could involve a lot of exploration and mystery-solving.