Despite her strict warning that any attempt at hanky-panky and Chizuru will see him in court, Kazuya can’t sleep in the same room as her. Not sure whether she’s still awake, he starts talking about how while he’s ready to tell the truth to their grans, he likes the person he’s becoming with her, and doesn’t want to stop renting quite yet. To his surprise, she agrees but “ending the lies” must remain a top priority. If he doesn’t want to hurt his gran, he’ll need to find a real girlfriend.
Unfortunately, since Kibe is close to his gran, Kazuya and Chizuru have to maintain the lie for now. That means his friend Kuri also believes Chizuru is for real, and invites the two to a double date with his new girlfriend. While walking by himself, wondering how Kuri could score a girlfriend, he bumps into a girl who I was sure from the start was that girlfriend. Of course Kazuya accidentally gets a peek at her underwear, so her first impression of him is that he’s a perv.
The next day it’s confirmed: Kuri’s girlfriend is Sarashina Ruka. Kuri’s date involves a rock-climbing session that enables him to show off his skills—he believes manliness is key to winning a woman’s heart). The climbing also has the side-effect of having the girls in unconventional positions while wearing tight pants, something Kazuya doesn’t think was accidental on Kuri’s part.
At one point Ruka asks for Chizuru to go with her, and she comes right out and accuses Chizuru of being a rental girlfriend. Chizuru dismisses the idea, and later even demonstrates they’re a real couple by “kissing” in front of Ruka (in reality her hand kept their lips apart). But Ruka ain’t buying it, and when Kazuya later tails her in an attempt to explain matters, she’s buying it even less.
And then of course, there’s the suspicion I harbored since learning Ruka and Kuri were dating: that she is also a rental girlfriend. The question is, if she is indeed a fellow rental, why is she so determined to ascertain the truth about Chizuru and Kazuya? Does she not want Chizuru on her terf…or is she vexed by the sense the two are something more than a rental and a client?