"Death of an Angel" is the last book of the "Sea Adventure" tetralogy by the Japanese writer Yukio Mishima. This novel depicts the life of the main character named Tatsuya, who witnesses the destruction of old Japanese religious traditions and the processes of modernization of society. The book shocks with its worldview and deep approach to the problems of human existence, reflecting the powerlessness before the transformations of the modern world. The reader feels the atmosphere of emptiness and decay that covers Japanese society through the main character's view of the events around him. "Death of an Angel" is a frank literary reflection on the lost soul of modern civilization.