IPZZ-923 Mitsuha Ashiba—a stunning model and TV personality with a perfect nine-head-to-body ratio—finds herself unexpectedly sharing a room at a hot spring inn with the producer she absolutely loathes... only to be brought to climax again and again by that hideous, insatiable old lecher.

Asuha, a TV personality and former popular model, joins the location shoot for a travel show’s hot spring segment to expand her career. The producer in charge is Sagawa, an overbearing man stuck in the mindset of the Showa era—and someone Mitsuha absolutely loathes. Meanwhile, Mitsuha is secretly dating her young manager; it is a relationship known to only a handful of people at their agency. However, Sagawa has begun to pick up on the subtle vibe between them. Upon arriving at the inn on the day of the shoot, Mitsuha is shocked to discover she has been assigned to share a room with none other than Sagawa. Her manager, overwhelmed by the tense atmosphere on set, fails to protest. Despite her anxiety, Mitsuha tries to reassure herself that nothing untoward will actually happen. That night, Sagawa corners her. "You two are dating, aren't you?" He hits the nail on the head, even without concrete proof. If this secret gets out, her standing in the industry could be ruined... Unable to resist, Mitsuha finds herself held by the man she detests, and in the process, a masochistic side of herself—one she never knew existed—begins to emerge.