Maybe an OC that has a special ability related to time. They can slow down time briefly during a fight. But this power comes with a cost, like it drains their soul energy quickly. The fanfiction could explore how they learn to control this power and balance its use while also dealing with the normal challenges at the DWMA, such as making friends and passing classes.
An OC who is actually a descendant of a powerful witch but doesn't know it at first. They start having strange dreams and powers emerging. As they discover their heritage, they have to decide whether to embrace their witch side or stay true to the DWMA's values. This internal struggle could be the main focus of the fanfiction, along with the reactions of their friends and teachers at the academy.
Well, you could have a witch OC fanfiction where the witch is an outcast among her own kind. She doesn't believe in the typical evil ways of witches and wants to use her powers for good. So she approaches the DWMA with an offer of peace and cooperation. Another plot could be that the witch OC has a hidden lair where she collects ancient artifacts that have the power to change the balance between witches and the DWMA. And a third plot idea is that the witch OC is in love with a DWMA student, and this forbidden love creates a whole lot of drama and challenges as they try to be together in a world where witches and DWMA are usually at odds.
One idea could be an OC who has a unique weapon form that no one has seen before in the Soul Eater world. For example, an OC that can transform into a musical instrument like a harp that has the power to soothe or disrupt souls. Another plot could involve an OC who is a transfer student from a far - off place with a different type of soul wavelength training, and they have to adapt to the DWMA's methods while also teaching the others something new. A third idea is an OC who has a connection to a powerful and ancient soul that starts to cause problems as the story progresses.
One idea could be an OC who is a weapon with a unique transformation ability, like turning into a musical instrument for a really different combat style. Another idea is an OC from a far - off land, bringing new cultures and fighting techniques to the world of Soul Eater. Maybe an OC who is a miester with a special power to communicate with the souls of inanimate objects and use them in battles.
Good plot ideas include your female OC trying to break a curse that has been placed on her weapon form. She might have to seek out a reclusive and powerful character for help. Also, a plot where she is framed for a crime she didn't commit in the Soul Eater academy and has to clear her name while also dealing with the real culprit who is still at large.
One idea could be a story where the main character discovers a hidden power within their soul that has the potential to either save or destroy the world in the Soul Eater universe. They then have to struggle with the moral implications of using this power.
Another plot could be that the reader is an outsider to the world of Soul Eater, perhaps from a different dimension. Soul accidentally discovers the reader and at first is suspicious. But as he gets to know the reader, he realizes that they are kind - hearted. They then have to deal with the challenges of the reader adapting to the Soul Eater world while also falling for each other.
One idea could be a crossover where the Juubi's power somehow gets transferred to a character in Soul Eater and they have to learn to control it. Another could be Naruto getting lost in the Soul Eater world and having to adapt to their way of fighting and dealing with souls.
One idea could be that Naruto characters are transported to the Soul Eater world. Naruto's determination could be a great asset in the battle against Kishin Eggs. He might use his shadow clones to surround and overpower the enemies. Another plot could involve the weapons from Soul Eater trying to learn Naruto's ninjutsu. For example, Soul could be interested in the Rasengan and try to incorporate it into his fighting style. Also, Maka's strong sense of justice would blend well with the Naruto characters' values, and they could team up to take on powerful foes together.
Maybe Mifune's code of honor clashes with the more chaotic and rule - bending nature of some of the Soul Eater characters. For example, he might not approve of how Black Star is so eager for glory and fame without following proper protocol. This could lead to interesting character development and story arcs for both sides.
Another plot could involve a character from Soul Eater accidentally getting a Hollow - like power and the characters from Bleach having to help them control it. This would be a great way to explore the different power systems in both universes. Soul Eater characters could learn about the inner world of the Zanpakuto from the Bleach side, and in return, the Bleach characters could gain insights into the complex relationships between meisters and their weapons.