Welcome To Pia Carrot

Welcome to Pia Carrot (Pia♥キャロットへようこそ!!, pia♥kyarotto e yōkoso?) is a Japanese visual novel series by Cocktail Soft (a part of F&C, later F&C FC02). The series is an eroge and anime have been based on it.

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. (it's worth noting that a maid-cafe named "Pia Carrot" also opened in real life; it is a cosplay restaurant in Akihabara, Japan).