They can simply break Ruka gently by simply telling Ruka that Chizuru has "feelings she doesn't understand" for Kazuya. Ruka can brag that she was there when Kazuya was in NEET fashion during that 3 month shit ghosting but Chizuru will just said that she cares for Ruka's "feelings" after she told Chizuru to go away. Kazuya will apologize to Ruka for lying because he can't the proper words and mainly because of Ruka's stubbornness. It's a make or break arc to step up in their relationship and Chizuru is the one who should step up because she never contributed in this major problem about Ruka. Realizing that the idea of being in love is not true love and the matters of respect of someone's choice on who they want to be with. For sure Ruka can put together the pieces and get the answer that Chizuru reciprocating Kazuya's feelings for her because from the beginning Ruka thought Chizuru is just treating Kazuya as a client and Ruka is "saving" Kazuya from his 'hopeless' romantic feelings for Chizuru because of the belief that it's just a rental girlfriend job. Hence why Ruka is harassing both Kazuya and Chizuru to prevent that romantic feelings of the two of them.
I passed by Reiji's threads account and he's posting drafts for upcoming chapters like 5 chapters ahead before their release. One of them caught my interest because Chizuru is wearing formal dress like she's "dating" someone. I suspect that "date" will be with one side character. My two guesses will be (sensible choice) the c*nt Umi and my long shot (kinda impossible) will be Mini. If we check Chizuru's schedule in chapter 317 we saw she has scheduled two rental dates and one is meeting in Aoyama which is a rich district in Tokyo that's outside her usual rental dates usually sets in Ikebukuro, Harajuko and Shinjuko. And my final guess about the anticipated date of Chizuru and Kazuya will be release in June the month where the 1st chapter of this manga got released reason why we're getting nonsense padding chapters like the mole. And certainly we're getting more of those kind of chapters til we reach June
