am a brainwashing doctor, and my sister is a magical girl.

In a world where magical girls possess extraordinary powers, a skilled but unorthodox brainwashing doctor, Lin Xuanyi, is tasked with corrupting a young magical girl, exploiting her vulnerabilities to turn her to the dark side. However, Lin's methods and motivations are not what they seem, as she navigates a complex web of intrigue and deception. As she delves deeper into her work, Lin must confront the true nature of her craft and the consequences of her actions, all while facing the scrutiny of her superiors and the potential for her own downfall.