"Gambling Apocalypse Kaiji" is a Japanese manga series created by Nobuyuki Fukumoto. It follows the story of Kaiji Itou, a down-and-out man who becomes embroiled in high-stakes gambling to escape his debts. The series explores themes of desperation, risk, and the psychological aspects of gambling. The narrative features various gambling games, each with unique rules and intense psychological battles. Kaiji faces off against formidable opponents, using cunning and strategy to survive. The series has been adapted into anime and live-action films, gaining a cult following for its intense storytelling and character development.