Ore no Imouto ga Oji-san no "Onaho" ni Naru to Iidashita!!

Erika Shinonome, a high school student, is transformed into her uncle's object of desire, a change that brings about a series of consequences. Her uncle, Kyousuke, is a university student who has been harboring a secret: he has a strong attraction to Erika. After the transformation, Erika finds herself in a precarious situation, with her uncle's desires now directed towards her. As she navigates this new reality, she must contend with the complexities of her uncle's emotions and the societal expectations placed upon her. The story explores themes of identity, family dynamics, and the blurred lines between love and desire.