Special A:

http://www.mangafox.com/manga/special_a/
Have you ever known someone who was better than you at everything you did? Hikari does. She has known Kei since they were both six years old and he's surpassed her at everything. Now they are the top two students in an extremely prestigious high school, with Kei holding firmly to that number one position, and Hikari is still determined to beat him, no matter what it takes to obtain the number position and defeat Kei. Although Kei likes Hikari more than a friend, she's too dense to realize it herself. Will Kei's love be returned? Will Hikari finally manage to defeat Kei?
You're My Girlfriend:

http://www.mangafox.com/manga/you_re_my_girlfriend/
From the author of Special A, a oneshot about a girl named Hatsune with a "bad mouth", for lack of a better description. She's kind-hearted and all, but her mouth spews the total opposite of what she means (which is probably due to the fact that she grew up with five brothers, a father, and no mom). And so she is seen as an arrogant, mean girl at her school, and that is why she hasn't had a boyfriend for the past fifteen years of her life. Well, that is, until she gets accepted at this Maidens' Club, where she meets a guy called Kirie with a somewhat unique habit (it happens when a girl comes within six inches of him). How will these two fare? Will Hatsune have a boyfriend at last? Will she be more than just a "girl" friend?