Nogizaka Haruka no Himitsu centers around Y?to Ayase and Haruka Nogizaka. Y?to is seemingly ordinary, but Haruka is attractive, intelligent, and rich, which prompts other students to idolize her. One day, Y?to wanders into the school library in order to return a book and accidentally stumbles upon Haruka's deepest, darkest secret: she is a diehard fan of anime and manga, in other words, a regular otaku. Promising Haruka to keep this a secret, Y?to becomes her advisor and confidante of sorts.
Genre: Animation, Comedy