[TSF no F (NOMU)] Imouto Role Change | Little Sister Role Change (TSF no F no Hon 2021-1) [Panatical]

After a mysterious transformation, a young girl finds herself inhabiting a new, feminine body that is far more developed and alluring than her former self. Struggling to navigate life in a school uniform that feels increasingly tight against her new curves, she seeks more than just academic lessons from her brother. What begins as a confusing change turns into a provocative journey of physical discovery, as she eagerly uses her new charms to draw him closer and explores the sensations of her unexpected new form.