Crooked Kingdom: Six of Crows, Book 2

Some gory moments, the worst being a gunshot in an eye socket: "[T]he blast didn't just take her eye but most of the top of her skull." An important character is shot and killed. A torture scene includes a mallet that almost shatters a leg. Main characters take some truly bloody beatings (killing some in the process, including a man with broken nails in his windpipe). They are also shot at repeatedly and pelted with knives and throwing stars (one time on a high wire with no net). Explosions injure people, and a pandemic causes panic. Corpses turn zombie-like or are taken out of morgues. A woman falls to her death with talk of another dangled over a ledge, then killed for information. Plenty of stories of the misfortunes of the main characters in their past include nearly being strangled to death, watching family members die, being beaten working in a brothel and losing connection to your own body while working there, being psychologically tortured as a young soldier, being sold as a slave.

Kissing, innuendo, and flirting between older teens, both straight and gay.

One "f--king" and a few uses of "ass," "damn," "hell," "son of a bitch," "bitch," and "bastard."

One character works on recovering from a serious drug addiction and asks for the drug often. They're all teens from the underbelly of society who have had hard lives, so there are plenty of mentions of bars and drinking until drunkenness, especially during gambling. People drink champagne at a gambling house, and there's some whiskey and brandy drinking.