Why Raeliana Ended Up at the Duke's Mansion (, ) 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 produced by Typhoon Graphics aired from April to June 2023.
Eunha Park dies in modern day Seoul and gets reincarnated in a novel as a supporting character named Raeliana McMillan who eventually gets killed off during the original story. To avoid her second death, she makes a deal with the male lead Duke Noah Volstaire Wynknight to pretend to be his fiancée in exchange for her silence regarding the whereabouts of the Royal Seal, information she knows from her prior knowledge of the original novel. Will Noah help Raeliana avoid her ill-fated ending, or is history doomed to repeat itself?
Written by Milcha, the novel began serialization on Kakao's digital comic and fiction platform KakaoPage on September 19, 2016. It composed of 159 chapters and collected in three volumes plus one volume of side stories.
A digital English translation of the novel was published exclusively on the Tappytoon app, under the title The Reason Why Raeliana Ended up at the Duke's Mansion.
A webtoon adaptation, illustrated by Whale, was serialized on KakaoPage on September 3, 2017 to March 22, 2021. It has been collected into nine volumes by D&C Media.
The webtoon is published digitally in English by Tappytoon, in Japan digitally by Piccoma and in print by Kadokawa Shoten. In October 2021, Yen Press announced that they licensed the webtoon for English publication.
A romance video game adaptation was developed by SHIFT UP Corp. and released on May 27, 2021. Even if the game is not available on the original platform anymore, it is set to receive English and Japanese translations.
An anime television series adaptation was announced on July 4, 2022. It is produced by Typhoon Graphics and directed by Junichi Yamamoto, with scripts written by Mitsutaka Hirota, character designs handled by Haruna Hashimoto, and music composed by Keiji Inai. The series aired from April 10 to June 26, 2023, on AT-X and other networks. The opening theme song is "Survive" by MindaRyn, while the ending theme song is "Always and Forever" by Serra. MindaRyn also sang "Fireworks", which served as an insert ending theme song for episode six. Crunchyroll licensed the series outside of Asia, and is streaming it along with an English dub.