Mirai Nikki, also known as Future Diary, is a psychological thriller anime that follows Yukiteru Amano, a lonely high school student who finds himself in a deadly survival game. Each participant possesses a diary that can predict the future in various ways, and they must use these diaries to outwit and eliminate each other to become the new god of time and space. The series is renowned for its intense and suspenseful storytelling, along with complex character development.