[Amuai Okashi Seisakusho (Ochita Ato Daisuki Samurai, Sasanoma Nibi)] Sisterification! This Chick Doesn't Want a Boyfriend! She Desires a Cute Little Sister! [GTF]

An ambitious girl declares she won't date a boyfriend, instead craving a cute little sister, and undergoes a dramatic gender transformation that leads her into an intimate yuri encounter with her newly feminized sibling. The story blends playful teasing, schoolgirl uniforms, lingerie, and power dynamics, highlighting the sister's desire to dominate while the transformed protagonist surrenders to the experience. With vivid panels showing the shift from a shy 'before' to a confident, seductive 'after,' the narrative explores the thrill of forbidden affection and the joy of finding a perfect little sister.