A male oc could be a supernatural being, like a half - vampire or something similar. He comes to Ikebukuro in search of a cure for his condition. Along the way, he befriends some of the main characters, such as Mikado and Kida, and together they uncover secrets about his origin that are linked to the long - forgotten history of the city.
One idea could be an OC who is a new informant in Ikebukuro. They get caught up in the power struggles between the Dollars, Yellow Scarves, and Saika. For example, they might start off as a neutral party but end up having to choose a side when their own safety is at stake.
An OC could be a street artist in Ikebukuro who uses their art to tell the stories of the various gangs and groups in the area. This OC could interact with Celty as they both have an interest in the unique aspects of the city. They might start a project to document Celty's presence in a positive way, which could draw the attention of the Dollars and other factions.
One plot idea could be that Naruto characters end up in Ikebukuro. For example, Naruto himself could be searching for a new type of ninja tool that he heard can only be found in Ikebukuro. Meanwhile, the gangs in Durarara start to notice this strange, orange - clad boy with strange powers. Another idea is a character swap where some of the Durarara characters gain ninja abilities and get involved in Naruto - style battles in their own world. Maybe Celty could use her shadow powers in a more ninja - like way, like stealth and quick attacks.
Well, a great plot for Durarara Shizuo x Reader fanfiction could be set during a festival in Ikebukuro. The reader gets lost in the crowd and Shizuo, with his intimidating presence, clears a path for them. This initial encounter could lead to more interactions as the reader starts to bring out the softer side of Shizuo. Maybe the reader is also involved in some sort of underground activity in Ikebukuro that Shizuo is trying to protect them from, and in the process, they fall in love. It could also be that the reader has a special power or ability that Shizuo discovers, and this discovery deepens their connection.
One plot idea could be that a character from Tokyo Ghoul ends up in Ikebukuro (the setting of Durarara). For example, Kaneki could find himself in the middle of the Dollars' activities. He might initially be confused by the different kind of chaos compared to the ghoul world. Another idea is that Celty's head mystery somehow gets intertwined with the ghouls' existence. Maybe there's a ghoul who has knowledge about her head, and this leads to an alliance between Celty and some of the Tokyo Ghoul characters to find out the truth. A third plot could involve the gangs in Durarara getting involved with the ghoul - human conflict in Tokyo Ghoul. They might try to take advantage of the situation for their own gains, but end up getting more than they bargained for as they learn about the true nature of ghouls.
One idea could be a story where Aoba and Mikado have to team up to solve a mystery in Ikebukuro. Maybe there's a new gang causing trouble and they use their different skills and connections to figure out who's behind it.
Maybe the Hufflepuff male OC is an exceptional flyer, even though Hufflepuff isn't known for Quidditch. He tries out for the team and faces discrimination from some of the other houses at first. But through his hard work and kind nature, he not only makes the team but also helps to bring unity among the different houses in the Quidditch matches.
Well, a plot could be that the male OC is a time - traveler. He arrives in Camelot during Merlin's time and has knowledge of future events. This causes a stir as Merlin tries to figure out if he can trust this stranger. Maybe the OC is from a future where magic has been fully accepted and he tries to bring that ideology to Camelot. Or perhaps the male OC is an artist who uses magic in his art, and his works start to have strange effects on the people of Camelot, leading Merlin to investigate.
One idea could be a male oc who is a new student in Riverdale. He has a mysterious past related to a big city crime syndicate. As he tries to fit in at Riverdale High, he gets involved with the core group of friends. Maybe he has some special skills like being an expert in martial arts or a whiz at hacking, which he uses to help solve the town's mysteries. Another plot could be that he is an aspiring musician who gets caught up in the drama between the music clubs at school and the local music scene in Riverdale. He could also have a romantic sub - plot with one of the female characters, like Betty or Veronica, but there are obstacles in their relationship due to his secrets.
A great plot could be that the male OC is a street magician in Gotham. One day, he discovers that his magic tricks are actually real magic due to an ancient artifact he found. He then uses this magic to fight crime, but he has to keep it a secret from the authorities and the criminal underworld. Or perhaps the male OC is a detective who has a unique ability to see the memories of the dead. This helps him solve crimes that no one else can, but it also takes a toll on his mental health as he is constantly exposed to the trauma of the victims. Another plot could be that he's a young heir to a wealthy family who decides to use his family's resources to fight against the poverty and crime in Gotham instead of living a life of luxury.