Monster is a psychological thriller manga series written and illustrated by Naoki Urasawa. The story revolves around Dr. Kenzo Tenma, a brilliant surgeon who becomes entangled in a web of conspiracy and murder after saving the life of a young boy who later becomes a serial killer. Monster delves into themes of morality, identity, and the nature of evil. With its intricate plot and well-developed characters, Monster keeps readers on the edge of their seats and has gained critical acclaim for its thought-provoking narrative.