ADV-SR0188 - 肛虐のカルテIII

It's an application of the 'May I cum?' series—this time it's 'May I ejaculate?'. They have the model bend over, stick her butt through a hole in a board, pull up her panties, inject an enema, and enjoy her pained expression as she tries to hold it in. It's kinky. However, I felt the way they brought her to climax was a bit light.