Yuuri is a small-sized girl with a restless personality and she is currently worried that these features of hers are the reasons why boys don't see her as a member of the opposite sex.
One day, when she chanced upon Fukaya, a senior famous for being a playboy with naturally oozing sex appeal, she thoughtlessly asked him to teach her how to bring out her own sex appeal.

But before she knew it, she has become a victim of his sexual allure herself!