Cio-Cio-San, also known as Madama Butterfly, is the main character in the opera composed by Giacomo Puccini. She is a young Japanese woman who falls in love with an American naval officer, B.F. Pinkerton. The story explores themes of love, betrayal, and cultural conflict as Cio-Cio-San waits for Pinkerton to return after their marriage. Set in the early 20th century, the opera highlights the challenges faced by Cio-Cio-San, including her struggle for acceptance in a society that values honor and tradition. Her tragic fate serves as a poignant commentary on the consequences of colonialism and the clash of cultures.