Sure is. The original form of Durarara was a light novel. It caught a lot of attention and led to other media adaptations. The light novel laid the foundation for the story's success.
Durarara tells its story through a complex web of multiple perspectives and interconnected plotlines. It keeps you engaged by constantly revealing new layers and surprises.
To the best of my knowledge, there are roughly 12 Durarara light novels. But you'd better check the latest official information for the most accurate count.
Writing a 'Durarara' reader insert fanfiction can be quite fun. Start by imagining your character in the vibrant and chaotic world of Ikebukuro. Consider what makes your character special. Are they an artist who sees the city in a different way? Or a street - smart fighter? Once you have your character, plan how they'll enter the story. Maybe they move to Ikebukuro and immediately run into Celty. As for the plot, you can explore different aspects of the 'Durarara' universe. You could focus on the supernatural elements, like the Dollars or the Yellow Scarves. Or you could look at the relationships between the characters. For example, how would your character influence the relationship between Shizuo and Izaya? And remember, writing is a process, so don't be afraid to rewrite and improve your fanfiction as you go.
Some have been translated. However, the extent of translation may not cover all the novels. You might need to check specific online stores or libraries to find out exactly which ones are available in English.