Incredibly generic edgelord writing with the most shallow exploration of its characters and themes.
I think the biggest praise I can give it is that it is fairly pressing for something that came out in 2007 and that the author was confident enough to end the story within 20 chapters.
I think a lot of the people who are propping this up or find it cathartic are people who were bullied years ago and that sole fact defines their life and is the only interesting thing about them.