Father and Son (A Larten Crepsley and Darren Shan Fanfic)

Hello, I will be writing a fan fiction about Larten Crepsley and Darren Shan, and most of the characters belong to Darren Shan and the Cirque Du Freak and The Larten Crepsley Saga. I will add some other random characters and sceneries (countries, towns). This is about the fatherly side of Larten and the urge of being the son of Darren, some short stories and events of their lives.
This will also be said as the side from Darren, like the books too.