Ive read the manga multiple times and have seen the anime, but if you ask me what it is about I would not be able to tell you a single plot point. Its written by a completely deranged man and you will never see anything like this. Despite being a “shounen” series the manga has sex gore violence and a R rating for its anime. It is definitely on the list of things that will kill a small Victorian child if viewed. It is popular, but definitely live up to the hype. The characters are fun, the story is fun and it doesn’t take itself too seriously. Compulsory reading.