Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
The story may seem light at first, but it builds, and fast. I've read up to Volume 9 and its brings you on such an emotional roller coaster. You will get attached to the characters. You will feel relief in their triumphs, and despair in their defeats. I really believe anyone can enjoy this story, and recommend to keep on reading on. This a story of the strong preying on the weak, and struggles for equality. It is a story with laughing, action, and weeping. Be prepared!