Works as a waiter at Pia Carrot 2.   ~!Jun is actually a female who is pretending to be a male in order to practice for an upcoming acting part.  Becomes the love interest of Kouji Maeda before leaving the restaurant.!~

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)

Jun Kagurazaka