Well, it could be special because of the themes it explores. Maybe it delves into historical events in a fictional way, or it might have a particular take on human nature. The settings in his Fantastic Fiction could also be very immersive, transporting readers to different times and places. His use of language might be another aspect that makes it special, with a rich vocabulary and smooth prose that makes the reading experience enjoyable.
I'm not sure if there is specific TJ P and Noam Dar fanfic available. You could try searching on some fanfiction websites, but it might be a bit niche.
I'm not entirely sure as'man dar bashama hastam' might be a phrase in a specific language (perhaps Persian?) and 'novel' here seems a bit out of context. It could potentially mean 'I am in the lower part (or basement perhaps) [and] novel', but this is a very rough guess without more context.
Perhaps one theme could be friendship. If Missy, Good Dar and Kerry are friends, their stories might revolve around how they support and interact with each other.
Maybe there's a young entrepreneur who is trying to make his mark in Dar es Salaam at night. There could also be a street vendor who has a whole different life at night compared to the day. And perhaps a police officer who is in charge of maintaining order during the night in the city.
It doesn't seem to be a correct sentence in standard English. In Persian, while'man dar bashama hastam' could be a valid phrase meaning 'I am in the basement', adding 'novel' at the end makes it seem like an incorrect or at least very unclear construction.
You could try looking on major fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics across various genres and fandoms.
I'm not sure specifically which works are in James R Benn's Fantastic Fiction. But you can check his official website or local bookstores for popular titles.