[Amuai Okashi Seisakusho (Sasanoma Nibi)] Fallen Sister! What She Wants Isn't a Boyfriend but a Cute Little Sister

A shy schoolgirl in a uniform strips away her clothes, revealing a hidden longing for her younger sister Lise‑chan, whose innocent affection turns into a tender, playful bond. The narrative follows her emotional shift from surprise at unexpected intimacy to heartfelt embraces and whispered promises of staying together forever. With themes of sisterly love, role reversal, and lingering desire, the story delivers a sweet yet passionate yuri experience.