Hello, Hunger Games readalike! I can't believe the female co-protagonist wasn't originally imagined as a girl. Ugh. But at least she is now, she, being 15-year-old aristocratic orphan military prodigy June Isparis, who is charged with hunting down her brother's accused killer, an underground hero, also 15, who goes by the name of Day.
It's a twisty turny future dystopia with multiple political factions, none of which is particularly appealing. I read the whole 305 page book in a day, so you know it's pretty compelling. And it's a series that only just launched in November, so it will likely be ages before the next installation comes out. There also seems to be a movie in the works, if that's your thing. (It's not particularly mine because they always mess it up.)