Survival is also a big theme. When Naruto is thrown into the Grimm world, he has to use his skills to stay alive. This theme of fighting against the odds in an unfamiliar and often hostile environment is quite prominent. For example, in many fanfictions, Naruto has to face Grimm monsters much stronger than him at first. He has to quickly adapt and find ways to defeat them. Another theme could be the discovery of self. As Naruto navigates this new world, he learns more about his own abilities and limitations, and how he can grow beyond them. This is especially true when he encounters new magic or powers in the Grimm world that he has to incorporate into his fighting style.
Power is a recurring theme. Naruto already has his chakra and ninja powers, and in the Grimm world, there are different sources of power. Fanfictions often explore how Naruto can gain or adapt to new powers in this new setting. It could be through making pacts with certain Grimm creatures or learning new forms of magic. There's also the aspect of how power can corrupt or be used for good, which is an interesting exploration in these crossover fanfictions.
One common theme is the struggle for acceptance. Since the OC is often different due to their Grimm - related aspects, they have to fight to be accepted by the RWBY characters. Another is power and its control. Dealing with Grimm - based powers can be a double - edged sword.
One common theme is adventure. Writers often send John Grimm and the OC on thrilling quests or dangerous missions. Another is romance. They might develop a romantic relationship between the two characters. And then there's the theme of friendship, showing how they bond and support each other through tough times.
Another theme is the power struggle. Faunus may have unique abilities related to their animal traits, and when combined with the threat of Grimm, there's often a struggle for power and control. Some fanfictions show Faunus trying to use their powers to protect themselves from Grimm while also fighting against human oppression.
A recurring theme is the idea of self - discovery. When a character travels through time in the Grimm world, they often learn more about themselves. They might discover their true purpose, or face challenges that force them to reevaluate who they are. This is especially interesting when combined with the unique and often dark elements of the Grimm world.
One common theme is the clash of their two different worlds. Sabrina is from a family of Grimms, dealing with the dark and dangerous side of fairy - tales, while Puck is a fairy. Another is the growth of their relationship from initial dislike to love.
Well, a frequently seen theme is the role of familiars in character development. In these fanfictions, familiars can act as guides or sources of strength for the characters. Also, the idea of dark and light magic is often explored. The Grimm elements can introduce some darker, more fairy - tale - like magic, which contrasts with the more defined light and dark magic in Harry Potter. And sometimes, there's a theme of discovery, like characters discovering new aspects of the magical world through their familiars.
One common theme is Pyrrha's courage in the face of the Grimm. Another could be her growth as a fighter against them. Also, the idea of sacrifice in protecting others from the Grimm is often explored.
A popular theme in 'aura grimm fanfic' is the battle between good and evil. Aura Grimm is usually on the side of good and has to fight against various evil forces. This theme allows for a lot of action and suspense in the stories. Also, the theme of family heritage sometimes comes up, exploring where Aura Grimm comes from and how her family's past affects her present.
Common themes in Grimm x Ghost fanfiction include the concept of fate. In the world of Hollow Knight, both Grimm and Ghost seem to be guided by some sort of fate. Fanfictions might delve into whether their paths were meant to cross and what that means for the future of Hallownest. The theme of transformation is also prevalent. Grimm's nature might be transformed by his interactions with Ghost, and vice versa. For example, Ghost could become more attuned to the darker aspects of the world through Grimm, while Grimm could become more in touch with the positive forces in Hallownest. Additionally, the theme of sacrifice often appears. They might be put in situations where they have to sacrifice something, whether it's their own power, a relationship, or their sense of self, in order to save Hallownest or each other.
No, it's not a common concept at all. Naruto and Grimm are two very different entities in the world of entertainment. Most fans of either series usually focus on their respective canons or more common crossovers. This statement seems like a very specific and probably a very individual - created idea that is not widely known or recognized.