Ayuha Samaru is airheaded yet straightforward, yearning for the "concept" of love, though it never seems to work out. She has confessed seven times, including her most recent attempt, only to face failure time and time again. As she wallows in the hopelessness of her situation, her friends try to comfort her, but the problem is that they are in blissful relationships of their own. Then, Samaru meets Yoshitaka Hiromitsu, the substitute homeroom teacher. He is young and handsome—but also painfully blunt. He is unafraid to tell Samaru her faults, and yet, at the same time, quick to offer advice of his own. His frank kindness sparks Samaru's interest, and she cannot help but fall in love. But is this just a passing fancy spurred on by her desire for romance?