Rent-A-Girlfriend season 5

Mami recalls how her father controlled every aspect of her life growing up. In high school, she met a boy named Taro Urashima, who became her boyfriend. She was genuinely happy until she discovered her father placed her in an arranged marriage. When Mami refused, her father forced Taro to break up with her. As a result, she believes that she was simply being rebellious and anytime she sees a couple, she has the urge to break them up. In the present, Chizuru declines Mami's payment. Instead, she agrees to tell Kazuya's grandmother the truth. After prying about Chizuru's grandmother and the engagement ring, Mami proceeds to insult Kazuya once more. This causes Chizuru to change her mind and she begs Mami to not say anything. Elsewhere, Ruka and Kuri have an awkward conversation where the latter admits to being happy to see the former again.

Kazuya receives a call from Ruka reminding him that he was supposed to meet her. Seemingly accepting Chizuru's apparent rejection, he arrives at the pool. While hanging out with Ruka, Kibe and Kuri, Kazuya has intrusive thoughts about Chizuru. Afterward, Chizuru joins the group. Once Kibe and Kuri leave, Kazuya and Chizuru have an awkward conversation concerning how they will handle their situation following the trip. Chizuru then recalls Mami's reaction when she begged the latter to not say anything. Later that day, Mami subtlety drops her phone with Chizuru's rental girlfriend profile on it in front of everyone.

Kazuya's grandmother discovers that Chizuru's profile is indeed real. Kazuya is nearly able to brush it off until his father recalls previously seeing him hand Chizuru some money outside their apartment complex. Mami proceeds to make the situation worse when she pretends she can no longer cover up the truth. She then goes one step further by making it seem like Chizuru has been using Kazuya the whole time. In a flashback, Kazuya and Chizuru's grandmothers had a conversation about how happy they were over their grandchildren's relationship. Back in the present, Kibe punches Kazuya. Afterward, he reveals the actual reason why Kazuya's grandmother organized the trip to the resort. A distraught Chizuru is unable to say anything when she is asked to speak in her defense, which causes Kazuya to stand up for her.

In a flashback, Kazuya promised Chizuru that he would protect her if his grandmother ever learned that she lied to her grandmother about their relationship. Back in the present, Kazuya claims that he and Chizuru started dating for real a week before her grandmother died. A skeptical Mami tells them to prove it by kissing. When Ruka and Kuri try to cover for them, Kibe mentions that he no longer wants to be tricked as he has always valued his friendship with Kazuya. After a while, Chizuru walks up to Kazuya and kisses him.

After kissing Kazuya, Chizuru confesses that she is indeed a rental girlfriend and she apologizes to everyone. She then states that she is legitimately Kazuya's girlfriend now. When Mami expresses skepticism for a second time, Chizuru gives Kazuya another kiss. A couple of hours later, Kazuya and Chizuru come clean to Kazuya's grandmother about almost all the details of their relationship. During dinner, Chizuru heads to the restroom. While she is away, Kazuya and Kuri have a conversation about what transpired. Elsewhere, Chizuru is confronted by an enraged Mami. Chizuru proceeds to tell Mami that she needs to stop lying to herself. Once she is alone, it revealed that despite how she come across when she is with Kazuya, Chizuru is very conflicted about her own feelings for him.

Two days later, Kazuya is back in his apartment thinking about the kiss. He attempts to speak to Chizuru, but she ghosts him. After three months, Kazuya is depressed. When Mini returns from her vacation in India to visit him, she learns what happened. Kazuya proceeds to dismiss her claim that Chizuru does not hate him at all. That night, Mini runs into Chizuru. Inside Chizuru's apartment, Chizuru explains why she is ghosting Kazuya. Mini tells her that this was the wrong thing to do and she should get back in contact with Kazuya.

Kazuya is still depressed inside his apartment when Mini shows up. She proceeds to explain to him what Chizuru told her. Later that night, Kazuya is relieved when Chizuru contacts him for the first time since she ghosted him. On March 1, Kazuya and Chizuru meet each other in Harajuku. After a while, Chizuru gives Kazuya a box of chocolates. She then apologizes for ghosting him. In turn, Kazuya is finally able to ask Chizuru if there is more to the situation than she is letting on. Just as he is about to leave, Chizuru stops him and admits that her feelings for him are conflicted. She also admits that due to her job, he might not be in love with the real her. As a result, Chizuru tells Kazuya to give her a little more time.

Kazuya thinks about what Chizuru said. He then informs Mini what happened. Meanwhile, Chizuru is also thinking about the same thing as Kazuya. That night, Chizuru arrives inside Kazuya's apartment where she asks how things are going between him and Ruka. Once she hears his response, Chizuru states that she does not want to hurt Ruka any more than she already has. As a result, she promises to come up with a solution in regards to their situation. Afterward, they watch one of Mini's videos. Just before Chizuru heads inside her apartment, Kazuya tells her that he will wait for her no matter how long it takes.