Was obsessed with 'City of Heroes' last year, a really fun ride through superpowered politics and broken systems. It ends on a note that feels complete but cracked open at the same time, right? So many people I talk to online ask this same thing. I've gone digging through the author's blog, Goodreads pages, all that. As far as I can tell, there's no direct sequel novel that continues the main story, which honestly is a little heartbreaking because I'd kill to see what happens after that final rooftop confrontation.
There is, however, a spin-off of sorts called 'City of Sirens.' It's set in the same universe, same grimy metropolis, but focuses on a different corner of it—the psychic underworld and a crew of aquatic-based vigilantes. It's good, but it doesn't hit the same beats for me. It feels more like a side-story expanding the lore rather than answering the big questions left by 'City of Heroes.' The waiting continues, I guess.