Yoosun shamelessly comes back to the couple's place to fuck Yunho in the woods. Upon seeing her off Yunho jums Yoosun in the car and almost gets caught cheating by his girlfriend.
Taesung recalls memories of the past month that's been full of uncontrollable sex. He proceeds to play with her body while she's sleeping. He simulates her into waking up and having morning sex.
Ga-yung pounces on Kyung-Ho at the bar's bathroom but they get interrupted. Once they're out of there, she invites him for a fancy jacuzzi hotel room where they obviously bang to their hearts content.
With the Sextopwatch Level 1 activated, the world stands still. O-Yeong is faced with his most daunting task yet: he must max out Ran's "sex gauge" in under five minutes or risk losing his Incubus King abilities forever. Every second counts as he moves from heated groping and deep kisses to intimate oral play. Racing against the ticking clock, O-Yeong finally bids his virginity goodbye in a desperate, high-octane encounter to ensure Ran reaches her peak before time runs out.