Brave is the sequel to Awkward, an amazing graphic novel about navigating middle school life. Brave follows the same basic group of kids, with a different main character. In Brave, Jensen (the art club kid from Awkward who is obsessed with sunspots) learns about bullying. He doesn't think he is a victim at first, but he gradually begins to understand what being bullied really means. He compares his school day to a video game, a constant struggle to avoid the "bad guys" and traps; making it through the day is a struggle for "survival."
This book has a bit more mature content compared with Awkward. There is no sex or serious violence, but the bullies call Jensen "fatso" and "stupid" and Jensen uses the phrase "makes my life a living hell." Compared to the overall message in this book, these are tiny considerations. But, as a parent, you should know what you are getting into. Many of our 3rd graders read Awkward and their parents might not think they are ready for this one.
Overall, this is a great book that describes realities of middle school, bullying, feeling alone, making friends, and standing up for yourself. I highly recommend it to 4th grade and up.