Noah, a girl born into the prestigious Ailnauts family, was not blessed with magical talent. Tired of the days of being called a "failure" and being harassed by her brilliant older sister, she secluded herself in her room with Haku, a high-ranking spirit and her only friend. One day, an invitation to a party arrives for Noah from the Estark Dukedom, the home of Prince Van, who is highly regarded by the royal family, and her fate begins to change... ! The Underachieving Lady Doesn't Notice the Duke's Adoration ~It Was Me, Not My Talented and Beautiful Sister, Who Was Chosen as the Fiancée~ (1) Author: Rinko Kashiwa Original Work: Alto Others: tatsuki Release Date: March 29, 2024 Price: 759 yen (690 yen excluding tax) ISBN: 978-4-06-534893-2 Size: B6 Number of Pages: 192 pages Series: KCx First Appearance: "Palcy" September 26, 2023 - January 2, 2024 release