Yuuto Ayase is not interested in girls - if his two housemates are anything to go by, girls are loud, brazen slobs that are best left alone. However, when Yuuto accidentally discovers an important secret of his school’s most popular female, Haruka Nogizaka, the two become bound in a budding friendship. All too soon, Yuuto discovers that, despite her flawless appearance, Haruka is clumsy, naive, and a closet otaku... and he just might be falling for her.
President of the Student Council at the almost-all-boys Seika High School, the hard-as-nails Misaki Ayuzawa works every day to make life easier on the small population of co-eds who have enrolled there. Though an unholy terror to all things male during school hours, in order to provide for her impoverished family, she secretly works after school at a maid cafe in Akihabara. However, when campus hottie Usui Takumi wanders into the restaurant during her shift, suddenly she finds her reputation in school at his mercy...
The girls have a secret they do not want anyone else to know in Nogizaka Haruka no Himitsu and Maid-sama! Of course the heroes in the story find out and have to try and help the girls keep their secrets.
Nogizaka Haruka no Himisu and Ore no Imouto ga Konna ni Kawaii Wake ga Nai have girls that are secretly an otaku. Both of these popular, pretty girls are trying to keep it a secret from everyone else. Boys find out and it is a race to try and keep it a secret.
Yuuto the otaku loves two things more than anything: moe, and artwork by Sayane, the teen's favorite online artist. So when the boy is offered a part time job at a local anime shop he eagerly accepts, unaware that there, he'd run into the beautiful Kotone, an 'otaku hater' who's never given Yuuto the time of day! With newfound commonalities, the two quickly become good friends – but little does Yuuto know that Kotone harbors another secret, one that will blow his mind!
These are essentially the same story: a nerdy, not-very-prominent guy becomes the keeper of a secret about the most desirable girl in school -- that, in fact, she is a nerd, too.