Yusuke Kinoshita is forced by his father to work at his restaurant Pia Carrot all summer due to his bad grades in school. What first seems to be a boring job becomes a memorable experience due to his interactions with his co-workers and his boss.
 
(Source: Anime News Network)

Yususke (from the first Pia Carrot series) returns as the manager with a whole new cast. So the new male lead is Koji. 
Despite being late after an "accident," Koji manages to get the job as the Carrot`s waiter because he`s very persistant. Included within the set are Azusa (the female lead who hates Koji for his perversion), Ryoko (the manager who`s sweet on Koji by working him very hard), Aoi (the token alcoholic), Jun (the secret-hiding waitor), and Mina (Azusa`s cute little sister). Pia Carrot 2 is served up as a romantic comedy, with a side of hentai. 
(Source: AniDB)

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)

Was inspired by a Japanese dating sim series by Cocktail Soft (a part of F&amp;C, later F&amp;C FC02). The games are all set around restaurants in the fictional "Pia Carrot" chain, and most of the female characters are waitresses at these restaurants. The individual restaurants in the chain are called "1st", "2nd", etc. 

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