One of the main characters is kidnapped and held prisoner under cruel conditions, and other people mock her while she is there. Another female character is at one point stabbed and several people taunt her and plan to hurt her further, but they are stopped.
One of the main characters had a pet wolf that he was forced to abandon after his exile. It isn't explicitly shown, but it is something he thinks about.
Wylan runs away from home himself, but his father disowns him. Nina's parents and Kaz's mother are also absent from their lives, but it isn't specified if they abandoned them.
Nina is kidnapped and imprisoned by Matthias, where she was left under poor conditions. Later, Matthias continually says hurtful things to her and physically attacks her at one point. Throughout this book and the next she eventually forgives him.
A fictional drug called jurda parem is central to the story, and several characters, both major and minor, are shown using it throughout. The second book dives deeper into themes of addiction and overcoming it.
While not explicitly described as 'sad,' several animals are under emotional distress due to mistreatment. There is another animal that, while is not present, is thought about by one of the main characters as being sad.
Inej was kidnapped and trafficked at around 14-15 years old, and she was forced to work at a pleasure house (unwilling prostitution) for around a year (no explicit scenes from memory, but there are mentions of what she had to do there, and it is gathered that the men visiting her were all likely adults).
The reader does not read about the burning, and no named character is being burned, but multiple characters know about others being burned, talk about it, or find remains of pires.
Kaz has flashbacks which involve disturbing imagery of decaying bodies. A fictional drug is used that causes the person using it to become sickly and die, and the way these people look is described in some detail.
Inej was forced to work in a brothel as a minor. Nina, who is 17, also mentions noticing adult men trying to flirt with her or looking at her sexually.
Main storyline revolves around a heist to "retrieve" a person but does not go through. Actual kidnapping of a main character right at the end of the book.
Yes there is. When the main characters are disguised as prisoners they are forced through a freezing communal shower before going into the prison itself.
There is a live action theater in the book called "Komedie Brute" where characters are dressed up in masks. The "madman" character is described to be dressed in a grotesque fashion - however the description is brief.
characters' bodies are controlled by external forces several times in the book, though no external entity ever enters their body it may still be triggering
A character spits on another, the spit is wiped off with a handkerchief and said handkerchief is then stuffed into an empty eye socket of the first character.
Lots of it. Matthias is incarcerated as a major part of his backstory. Kaz is mentioned having been incarcerated several times. A large portion of this book takes place inside a prison, where the characters have been sent as prisoners.
SPOILERS
one of the main characters' parents is discovered in the second book to have been living in a mental institution after being placed there without their consent and without it being necessary (someone else wanted to get rid of them). the main character enters the institution while unbeknownst to them that it is one and that their parent is there.
Not specifically, but Nina eats a lot and after a certain event ends up losing her appetite and not eating properly for a few weeks, which is commented on by other characters and treated as a concern.
a main character has leg problems and needs a cane to walk. there are a few instances where ableist language is used on them i think but one that i remember better is a time in the first book, while in a cell, when a character calls them a word in their native language that the mc understands before the characters tries to translate thinking that "he needn't have bothered" since the mc knew that word in enough languages to understand what they were called
SPOILERS
No blackface, but towards the end a white character is magically changed to look like an asian character, although it isn't used to depict the character being racist. This is reversed in the second book.
It does not have a very happy ending, but there is a second book following. [Spoilers] none of the main characters die in this book, but near the end of the second. One of the main characters gets kidnapped, though (but saved in the second).