Perhaps a group of vampires decides to open a restaurant in the Food Wars universe. They face challenges not only from other restaurants but also from the human - dominated food industry. Their menu could feature traditional vampire - like foods but with a modern and gourmet twist. The story could follow their journey to gain acceptance and success in the competitive food world.
One idea could be to create a fanfic where a new student arrives at the school with a completely unique and unknown cooking style. This could shake up the existing hierarchy in the cooking battles. Another idea is to write a fanfic that focuses on the backstories of the judges, exploring what made them such tough critics in the Food Wars world. A third idea would be to set a fanfic in a different location, like a cooking competition on a luxury cruise ship where the ingredients are limited to what's on board.
One idea could be a 'what if' scenario where Soma has to cook with a completely new and strange ingredient from a foreign land. He has to quickly learn about its properties and how to incorporate it into a dish that will wow the judges.
One plot idea could be Luke being turned into a vampire during a secret Sith experiment on a remote planet. He then has to struggle with his newfound vampiric instincts while still trying to uphold the Jedi way. Another could be that he is bitten by a vampire - like alien species and has to find a cure before he fully succumbs to the dark side of his new nature. Maybe he forms an alliance with some outcast vampires who also oppose the Sith's evil plans.
One idea could be that Takumi and Megumi team up for a special cooking competition against a team of international chefs. They combine their unique skills, with Takumi's Italian - inspired techniques and Megumi's Japanese traditional cooking knowledge, to create a fusion menu that wows the judges.
A great plot could be that Ikumi has a family - based cooking secret that she shares with Soma. This secret ingredient or technique helps Soma improve his cooking in a new way. Or perhaps there's a fanfiction where Soma and Ikumi are pitted against each other in a cooking duel, but instead of being rivals, they end up learning from each other's techniques and become better cooks. There could also be a story about them opening a small pop - up restaurant together for a short period, trying out new recipes on customers and getting feedback.
Perhaps there is a mystery ingredient that gets added to the food in the cafeteria, which causes everyone to go wild during the food fight. The characters then have to figure out what the ingredient is and how to stop its effects while still engaging in the food fight. This could involve some detective - like work from characters like Ruby, who is always curious and eager to solve problems.
One idea could be them competing in a cooking competition together, where they have to combine their different cooking styles. It would be full of tension and also the discovery of how well they work as a team.
One idea could be Soma and Alice teaming up to create a new and revolutionary dish that combines their unique cooking styles. Maybe they enter a secret cooking competition that is not part of the regular Food Wars events.
Well, a plot could revolve around Soma being challenged by a rival chef who also has an eye on the harem. Soma then has to prove his cooking skills and his worthiness for the harem through a series of cooking battles. Or perhaps the harem members each have a secret family recipe that Soma has to incorporate into a grand meal to show his understanding of them. Also, there could be a plot where the school is in danger of closing and Soma, with the help of the harem, has to cook up a storm to save it, which in turn strengthens their relationships.
For 'food wars crossover fanfiction', you could consider a crossover with 'One Piece'. The Straw Hat Pirates could land on an island where the only way to progress is by winning a cooking war. Also, a crossover with 'Fairy Tail' would be cool. The mages could use their magic to create amazing and magical dishes in a cooking showdown. And a crossover with 'Attack on Titan' might involve the Scouts having a food competition to boost morale within the walls.