What is RPG No S? 

In RPG No S, you play as a bartender named Barcello who is in the middle of organizing a small bar and restaurant called The Wonderland Tavern. The purpose of this bar is to serve food and drinks to the customers. 

The game starts with Barcello and his two friends, the girls Camerina and Sheila, in the basement of the tavern. They have been running the bar for their parents, who are dead. They want to give the place a new direction and become the best restaurant in the country. However, the location of their tavern is in a bad place, and so they are getting a lot of people who come to their tavern to drink alcohol.