Haruka is the main female character of Haruka Nogizaka's Secret. she is an idol at Hakujō Academy and is also an otaku... in secret.
Haruka is the most popular girl in her academy, being both beautiful and talanted at whatever she does. She also has a secret that she is an otaku, but doesn't even let her parents know about it. She bumps into Yuuto by accident one day, who finds out her secret when she was returning an anime book. He promises to keep her secret, and the two of them become good friends.