One idea could be a crossover where Naruto, with his ninja skills, is transported to Celty's world. He might team up with Celty to solve some mystery in her city. Naruto's ability to sense danger and Celty's unique skills could make for an interesting partnership.
The Durarara novels often have complex characters. For example, characters like Izaya Orihara are full of contradictions. His actions are unpredictable, and his motives are often shrouded in mystery. This makes the novels very engaging.
The theme of discovery is also present in Celty and Shinra fanfic. They are constantly discovering new things about each other and about themselves through their relationship. And the theme of the supernatural world is often explored as Celty is a supernatural being and Shinra is involved in that world. This adds an element of mystery and excitement to their relationship in the fanfics.
Love and loyalty are very common themes. Celty and Shinra have a deep love for each other that is often the focus. Fanfics show how they are loyal to one another through various situations. Also, the theme of discovery is there. As Celty discovers more about the human world through Shinra, and Shinra discovers more about Celty's true self, these aspects are frequently written about in the fanfics.
Love and loyalty are often themes. Shinra is always very loyal to Celty, and their love story, which is quite unique given Celty's nature, is a central part. Also, the theme of discovery. Celty is constantly discovering more about the human world with Shinra by her side, and Shinra is learning about Celty's world as well.
Sure. One of the notable Durarara novels is 'Durarara!! SH'. It delves deeper into the complex world of Ikebukuro, exploring the various characters' backstories and their intertwined relationships. Another good one could be 'Durarara!! Ketsu'.
Yes, they do. Their personalities and relationships in the original work are the basis for fanfiction creation. Writers often take these elements and expand on them. For example, the complex relationship between Izaya and Shizuo gives a lot of inspiration for fanfic writers to create various scenarios of their encounters.