Popsugar Reading Challenge category: A book about gender identity
Sovereign, by April Daniels
Sovereign is the sequel to Dreadnought, in which teenager Danny Tozer inherits the role of the superhero Dreadnought. One of Dreadnought's powers is having one's ideal body - which, for Danny, means that she's suddenly a girl. The local superheroes' league turns out to be less virtuous than it first appears. (I've noticed this is a theme in superhero stories by marginalized people - see also Not Your Sidekick by C. B. Lee.)
In Sovereign, Danny comes up against a megalomaniac billionaire who wants to rule the world by stealing other people's superpowers. And her old enemy from the first book, Graywytch, continues her transphobic crusade against Danny, including some really uncomfortable (but story-relevant) scenes of violence. And in between saving the world, Danny is trying to figure out her relationship with her girlfriend Calamity.
There's a whole community of superheroes and villains in this world, with lots of colorful characters. My favorite was Danny's friend Doc Impossible, who seems to be developing a drinking problem - despite being a robot? The ending wasn't a cliffhanger, but it definitely left the door open for a third book - which I will definitely read.