"Ousama Game," also known as "King's Game," is a Japanese horror manga and anime series created by Nobuaki Kanazawa. The story revolves around a high school class that receives a mysterious text message from an entity known as the King. The message contains orders that the students must follow, or they face dire consequences. As the game progresses, the challenges become increasingly dangerous, leading to betrayal and death among the classmates. The narrative explores themes of survival, morality, and the impact of peer pressure, making it a gripping tale of suspense and horror.