This 18+ dating simulation game is published by Nutaku, a Japanese publisher known for dating games and some games with NSFW.

The setting in Booty Calls is a small seaside town. You are a strong young man from the fishing village. One morning, while walking on the beach, you meet a beautiful girl named Ariella. Ariella introduces herself as the princess of the Sea King, a mermaid. Because she is curious about the human world and wants to find some unique ingredients that the sea does not have, she has gone ashore and is here.

Confused by the beautiful girl, you immediately accept the invitation to help Ariella find those rare ingredients with one condition: Ariella must help you conquer the beautiful girls in the village because of your shyness, you have not approached them and therefore have not had a love affair.