I love portal fantasy, so this was right up my alley. As you can guess from the title, there are some references to Peter Pan.
There's canon m/m and mentions of f/f. I thought this book would have a fandom, but apparently it's not well-known enough for that.
A line I didn't expect to read in a novel: "Tonight, she's cosplaying Victor Nikiforov from Yuri on Ice."