Dinner of a Sex Slave - Umizu Saki RBD-715

Naoko, who works at a clothing store, is chosen as the store's image model because of her pretty appearance. She also resigns after marrying Takayuki, a rich second-generation heir of an advertising agency. However, Kaoru, the daughter of Naoko's company, also loves Takayuki. After being rejected by Takayuki's marriage proposal, she plans to take revenge on Naoko...