Synopsis
Sold off by her own mother, a young girl winds up in the house of the empire's most feared duke, Ein Castielo. Given the name Estelle, she must come to terms with her family, demon-lineage, and new standing in high society. But what will happen to the innocent Estelle when the enemies of the duke learn of her existence? Does she really have what it takes to be a child of the great and powerful Castielos?
(Source: Tapas Media)
Background
I Belong to House Castielo is originally a web novel which was serialized on KakaoPage, where 182 web chapters were released from August 21, 2017 to December 7, 2017. It was published in book format by Samyang (삼양출판사) under the Fioret (피오렛) imprint on August 16, 2018.
The first 64 web chapters were published digitally in English by Tapas Media from April 14, 2025 to September 1, 2025 before the license was discontinued.