Monster, created by Naoki Urasawa, is a psychological thriller seinen manga series. The story revolves around Dr. Kenzo Tenma, a brilliant surgeon who becomes entangled in a web of mystery and intrigue when he saves the life of a young boy who later becomes a serial killer. Monster delves into the depths of human nature, exploring themes of morality, justice, and the consequences of one's actions. With its intricate plot, suspenseful atmosphere, and morally complex characters, Monster is widely regarded as a masterpiece in the genre.