Class de Ichiban Kawaii Gal wo Ezuke Shiteiru Hanashi

Hori Kazami, a high school freshman, spends his time in class discussing otaku-related topics with friends. He shares a secret with them: Sakura Kouzuki, a popular model and the most admired girl in their class, is his step-sister. The two live together and are in a romantic relationship. At school, Sakura maintains a respectful distance from Hori, avoiding any indication of her feelings or his interests. At home, they enjoy each other's company, engaging in activities like watching anime and cosplaying. Hori also cooks for them, and they appreciate meals together, such as when Sakura compliments his stewed fish. Their evenings are filled with affection and shared hobbies.