Class de Ichiban Kawaii Gal wo Ezuke Shiteiru Hanashi

Hori Kazami, a first-year high school boy, is busy talking about otaku things with his friends in the classroom, like usual. But he has a secret. Sakura Kouzuki, a model and the most popular girl in class, is his step-sister. They live together, and they are lovers. At school, Sakura tries to keep a