Monster is a psychological crime-solving manga written and illustrated by Naoki Urasawa. The story follows Dr. Kenzo Tenma, a talented surgeon who saves the life of a young boy named Johan Liebert. However, Tenma soon discovers that Johan is a dangerous sociopath responsible for a series of murders. Determined to stop Johan's reign of terror, Tenma embarks on a relentless pursuit, delving into the dark depths of human nature. With its complex characters, intricate plot, and moral dilemmas, Monster is a masterpiece that explores the blurred lines between good and evil.