Slum Online by Hiroshi Sakurazaka is about Etsuro Sakagami; a student, who spends most of his time playing the massive multiplayer online combat game called Versus Town. Sakagami realizes that he is addicted to Versus Town, and he also realizes the dangers of that as one of his best friends has locked up himself in his room doing nothing but playing the game. Still he does not want to do anything about it. In fact, the book describes playing the game as something that can be life-fulfilling. Sakagami's aim in life is to become the best fighter in Versus Town. The books originality is that Sakagami's life in Versus Town and Real Life are treated on an equal footing, trying to bring across the excitement that Sakagami feels when he is fighting in the game. It does not moralize by depicting the game as all bad. Although this book is very different from Sakurazaka's other book in the Haikasoru series All You Need Is Kill, it is just as highly recommended.