A scumbag is, by definition, someone morally corrupt and of poor character, whose behavior runs counter to society or violates human ethics and standards of conduct.
For example, plagiarizing someone else's work, having multiple ambiguous relationships with the opposite sex, or having an affair with someone who is not one's spouse or fiancee all fall under the category of scumbag behavior.
This is the story of a once kind and upright boy who gradually "falls" into becoming a scumbag as the course of his destiny changes.
(Primarily an everyday-life story set in the world of anime and manga.)
