One idea could be a story where Ayato and Hinami are forced to team up on a dangerous mission. They start off distrusting each other, but as they face various challenges together, they gradually develop a mutual respect and friendship. For example, they might have to infiltrate a powerful ghoul organization's hideout. Another plot could be set in a post - apocalyptic Tokyo where they are among the few ghouls left and have to find a way to coexist with the remaining humans. Ayato's tough - guy attitude and Hinami's more gentle nature could create interesting dynamics throughout the story.
A possible plot for an Ayato x Hinami fanfic could be a time - travel story. Hinami somehow gets sent back in time and meets a younger Ayato. She tries to prevent him from making some of the more reckless decisions he made in his past. This could lead to a lot of character development for Ayato as he starts to see things from a different perspective with Hinami's influence. Or perhaps it could be a story where Ayato discovers Hinami has a special power that could change the fate of the ghouls. He then decides to protect her at all costs, leading to a deepening of their relationship as they face numerous enemies together.
To develop their relationship, start with small moments of interaction. For example, Ayato could save Hinami from a dangerous situation, which would be the first step in building trust. Then, have them share their past experiences. Ayato could talk about his family and his struggles, and Hinami could do the same. This would make them understand each other better. Another way is to put them in a common goal - oriented situation, like working together to protect a group of weaker ghouls. Through this, they would see each other's strengths and weaknesses and grow closer.
One idea could be a post - apocalyptic scenario where Kaneki and Hide are trying to survive in a world that has become even more hostile to ghouls. They could be on a journey to find a safe haven, relying on their deep - seated friendship and Hide's unwavering loyalty to Kaneki. Along the way, they face various challenges that test their bond.
One idea could be to explore the backstory of Rize's brother. Maybe he was involved in some secret ghoul society before Rize became known. You could start with a scene where he is on a mission for this society, which then ties into how Rize's life is affected.
Maybe the BTS members are humans in the Tokyo Ghoul world, but they are trying to find a way to co - exist with ghouls. They could start an underground movement to promote peace between the two species. This would involve a lot of action scenes where they have to face opposition from both humans and ghouls who don't believe in co - existence.
One popular crossover idea could be with 'Attack on Titan'. Picture Tokyo Ghoul characters in the world of Titans, fighting alongside or against the Survey Corps. Another could be with 'Fullmetal Alchemist', where the alchemical concepts might interact with the ghoul powers. For example, an alchemist trying to find a way to cure the ghouls or control their kagune.
Some plot ideas for Tokyo Ghoul female OC fanfiction include her being an outcast among ghouls due to her different beliefs. Maybe she believes in non - violence and tries to spread this message, which goes against the traditional ways of many ghouls. Or, she could be on a quest to find out the truth about her transformation into a ghoul. Was it an accident, or was she targeted? This could lead her to uncover secrets about the ghoul world that have been long buried.
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 exploring the Black Reaper's inner turmoil as he struggles between his human and ghoul sides more deeply. Maybe he has to make a choice between protecting a group of innocent humans or siding with a ghoul community that has shown him kindness. Another could be a time - travel plot where the Black Reaper goes back to a crucial moment in his past to change something, but discovers that changing the past has unforeseen and dangerous consequences. And a third idea could be a story where the Black Reaper teams up with an unlikely ally, like a human detective who is also trying to solve a mystery related to the ghoul underworld.
One idea could be a crossover where a character from Harry Potter accidentally travels to the world of Tokyo Ghoul and Seikirei. They might use their magic to help in the battles against the ghouls in Tokyo Ghoul and get involved with the spirit battles in Seikirei. For example, Harry Potter himself could arrive and use spells like 'Stupefy' to stun the ghouls or use magic to protect the Sekirei from harm.
One idea could be that the reader is a new ghoul in the area and Naki takes it upon himself to show them the ropes. Maybe he teaches them how to hunt without getting caught. Another plot could involve the reader being injured and Naki protecting them from other ghouls who might see them as easy prey. A third plot idea is that the reader has a special ability that Naki discovers and they team up to use it for their survival in the harsh ghoul world.