This book is amazing
When it comes to books age rating is hard, many people can be more adult in their brain even though they are young. As for this book, there are detailed sex scenes and a large amount of violence, but i didn’t affect me. I have read books that I suppose is over my age, but if I feel uncomfortable then I would just stop the book and don’t finish it. But in this book there is great messages and a lot of great role models.
(spoiler alert) Many of the character has endured horrible things happen to them. For example, Rhysand, he was being held under the mountain, away from his friends. Plus, Amarantha sexually abuses him every night, and the night were he used to be free and be with his friends he had to "serve" her longer. But in the end of this book Rhysand has gotten over this and healed.
Feyre has had some stuff happen to her as well. She was in an abusive relationship, and she is still suffering from post-dramatic stress disorder. In the end she is healed and does not feel as much guilt as she did before, and she is happy in a new relationship (let’s ignore the last 50 or so pages).
Morigan, Rhysand cousin has also had a horrible past, so has Azriel and so has a lot of the other characters in this series. The importance of this is that they now have healed and are happy. It sends a message that you can heal when horrible stuff happens to you, you can get over it and live a happy life.
So even though there is a little sex, violence, swearing and drinking, is it not important that young adults can read and relate with characters and see that they healed, that they got out and that the reader can learn about this.