Sex and Curse

禁房艷奇

Also known as Sex & Curse, Oman of a Snake Girl, 蛇魔追魂降, Snake Devil, She mo zhui hun jiang

Women keep throwing themselves at Charlie, but he falls for charming masseur Si Wai, who is beholden to a cute little idol who once saved her from being raped by a gangster. Unfortunately, the ghost of the gangster goes after Charlie, making him have sex with the women he is obliged to show around for work purposes.