Kouji wants to work part-time, so when he saw a cute girl wearing a Pia Carrot uniform, he tried to get a job there. On the way there, he accidentally bumped into Azusa, and with some misunderstanding, they literally hate each other. To Kouji's surprise, he finds that she also got a job in the Pia Carrot, forcing him to face her daily. But with time, he will discover that 'hate' is not the appropriate word to describe his feelings...
(Source: Anime News Network, edited)