"The Decay of the Angel" is a novel by Japanese author Yasunari Kawabata, published in 1972. It explores themes of beauty, aging, and the passage of time through the life of a young man named Kiyoaki Matsugae. The story is set in post-war Japan and reflects on the complexities of human relationships and the impact of societal changes. The narrative follows Kiyoaki's relationships with several women, particularly Satoko, who embodies both beauty and tragedy. As Kiyoaki grapples with his emotions and desires, the novel delves into the idea of decay, both physical and spiritual, highlighting the fleeting nature of life and love.