Why Raeliana Ended Up at the Duke's Mansion (Korean: 그녀가 공작저로 가야 했던 사정, romanized: Geunyeoga Gongjagjeolo Gaya Haessdeon Sajeong, Japanese: 彼女が公爵邸に行った理由, romanized: Kanojo ga Kōshaku-Tei ni Itta Riyū) is a South Korean web novel written by Milcha. It has been serialized in Kakao's digital comic and fiction platform KakaoPage since September 19, 2016. A webtoon adaptation was first serialized in KakaoPage on September 3, 2017, and is illustrated by Whale. An anime television series adaptation by Typhoon Graphics is set to premiere in April 2023.