Some possible plot ideas include a crossover with a space - opera anime. The Monster Musume could be part of a crew on a spaceship, exploring new planets and encountering alien species. They might have to use their monster traits to their advantage in various intergalactic situations. Another idea is a crossover with a cooking anime. The Monster Musume could participate in cooking competitions, using their knowledge of monster - specific ingredients and cooking methods. And a crossover with a sports anime. The Monster Musume could join a sports team and use their physical abilities (like a centaur's speed in running) to win matches.
A cool plot for Monster Musume crossover fanfiction might be a crossover with a time - travel story. The characters could be sent back in time to an era where monsters were more feared or revered. They would have to adapt to the old ways and also find a way to get back to their own time. Or, a crossover with a detective story. The Monster Musume could use their unique abilities to help a detective solve a series of mysterious crimes. For instance, a lamia could use her long body to search in narrow spaces for clues. Also, a crossover with a post - apocalyptic world. The Monster Musume would have to survive in a world full of new threats and help rebuild society.
One idea could be a crossover with a fantasy adventure series. The Monster Musume characters could join the heroes of that series on a quest to find a magical artifact. For example, they might travel through a dangerous forest filled with new and different monsters. Another plot could involve a crossover with a school - based anime. The Monster Musume girls could attend a normal school and deal with the typical high - school problems like exams and crushes, while also having to hide their monster identities. A third idea is a crossover with a superhero story. The Monster Musume could gain superpowers and team up with the superheroes to fight a powerful villain threatening both their worlds.
Another plot could revolve around an OC who is a scientist. He discovers a new type of monster girl that no one has seen before. This discovery causes a stir in the Monster Musume community. As he tries to study and understand this new creature, he forms a special bond with her, and they face challenges together, like dealing with those who want to use the new discovery for their own gain.
One idea could be that Naruto discovers a hidden village of monster girls in the Land of Fire. He has to learn to co - exist with them and maybe even team up with some to face a new threat that targets both humans and monster musume.
The OC could be an artist who is commissioned to paint portraits of the monster girls. Through this process, he gets to know their personalities and stories. This could lead to him becoming a sort of advocate for them in the human world. Another plot could be that the OC is a delivery person who always delivers to a monster girl - only establishment. He becomes friends with the regulars and gets involved in their community. A different idea is that the OC is a gardener and the monster girls' habitat is being damaged. He uses his skills to restore their environment and in the process, forms a deep bond with them.
In Monster Musume fanfiction, a common plot is the training or development of the monster girls' special abilities. For instance, a mermaid learning to control her water - based powers better. There could also be a plot where a group of monster girls and a human form a detective - like team to solve mysteries in their town. This might involve using their unique monster traits to their advantage. Another plot idea is a love triangle between a human and two monster girls, which creates a lot of drama and tension as they all vie for the human's affection.
Perhaps a story where a group of monster girls and their human friends enter a mysterious forest that has strange magical properties. Inside, they find that their abilities are either enhanced or suppressed in unexpected ways. They must rely on each other's unique skills to find their way out. This would involve a lot of character development as they face different challenges and learn more about themselves and each other.
One possible plot could be that Naruto, during one of his travels in a new and strange land, stumbles upon the world of Monster Musume. The Monster Girls could initially be wary of him, seeing his strange powers. But Naruto, with his friendly and determined nature, tries to make friends. For example, he could use his Shadow Clone Jutsu to help with various tasks in their village, like building or farming. As time passes, they start to trust him more and he learns about their unique cultures and abilities, and together they face a common enemy that threatens both their worlds.
One idea could be a story where Suu discovers a new form of her ability that she has to learn to control. This could lead to her having to attend a special school for monster girls to master it. Along the way, she makes new friends and they all have to work together to overcome the challenges of this new power. It would be a story of self - discovery and friendship.
A possible plot is that the main character discovers a hidden power within himself that attracts all the monster girls. As the harem forms, they have to deal with the outside world's reactions. The 'double' part could mean there are two main groups of monster girls, perhaps from different regions or species. Regarding the 'lemon' element, it could be about the characters exploring their new - found feelings through soft and passionate embraces. For instance, a cat - girl might purr contentedly when hugged by the main character, leading to a deeper emotional connection.
Maybe the monsters from the Monster Hunter world start appearing in Remnant, the RWBY world. The RWBY teams then have to adapt their fighting styles to take on these new and powerful foes. They might study Monster Hunter strategies to gain an edge.
Another interesting plot could be a crossover with a post - apocalyptic world. The Monster Buster Club members find themselves in a world where the monsters have already taken over. They have to team up with the survivors of that world, share their knowledge of fighting monsters, and find a way to reverse the situation and restore peace.