Often, the character of Arima Kishou himself is a key element. His unique personality, his skills, and his role in the story's universe are central. For example, his calm and collected nature is something that many fanfics play around with.
One common theme is the clash of different worlds. Since it's a crossover, there's often the idea of Kishou Arima's world in Tokyo Ghoul colliding with another fictional world.
In some kaori x arima fanfictions, they might be in a parallel universe where their roles are slightly different. For example, Kaori could be a famous composer and Arima a struggling pianist. Their encounter then leads to a whole new chapter in their lives, filled with inspiration, love, and the magic of music.
Sure. One great 'arima kishou fanfic' could be 'Arima Kishou's Hidden Journey'. It delves into his character in a really interesting way, showing his internal struggles and his relationships in a new light.
It's hard to say for sure. Both Ken Kaneki and Arima are incredibly powerful in the manga, and it could depend on various factors like their current state and the circumstances of the fight.
Well, some of the best kishou arima crossover fanfiction might be the ones that cross him with other popular anime characters. For example, if he's crossed with a character from a shonen anime, it can create really interesting storylines. These crossovers can explore different power dynamics and character relationships that you wouldn't see in the original series.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can search for kaori x arima ones specifically. Just use the search bar and type in their names.
One idea could be a crossover with a fantasy world where Arima has to use his skills as a ghoul investigator in a land full of magical creatures. Maybe he has to team up with a powerful wizard to hunt down a ghoul - like monster that is terrorizing the kingdom.