Sometime in the future a natural disaster occurs that affects all electronic devices in the world. Wait. This isn't the plot of the book. What it is about is a boy who believes that hitting things is the ultimate way to make them better. Even sick people. Shota plans to heal the world with his karate. This is where the majority of the books humor comes from as Shota most often goes overboard and usually ends up destroying whatever he tries to "fix".
8/10