"Cafe latte" is the mutually agreed upon safe word between Gyum and Ja-wook as they begin their Dom/sub relationship in a VVIP club lounge. However, Ja-wook is not actually a masochist but instead infatuated with Gyum from the start, a fact unknown to Gyum. Despite his kind demeanor outside of their sexual dynamic, Gyum has a reputation for being a sadist within club circles. As a first-timer, Ja-wook fumbles for safe signals during their exhilarating nights together and wakes up with bruises. It's important to note that while Gyum is sexually sadistic, he is not violent or manipulative in other aspects of his life.