Koi no Moebius - Kare to no Shujuu wa Genei no Kanata kara

Kirin, an office lady, has been having the same erotic dream every night. In these dreams, she is a sex slave in Ancient Rome, enduring humiliation at the hands of her master. Her life takes a shocking turn when her company’s stunningly handsome CEO, Kimijima, suddenly declares to her, "You are my sex slave!" A reincarnation love story of two souls drawn to each other across time and space!.