Kanojo, Okarishimasu 5th Season

マミはカズヤと対峙しながら、支配的な父親と玉置タロウとの強制的な別れを振り返る。

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. (Source: Wikipedia)

水泳場でカズヤとルカが出会い、チヅルも合流、マミが秘密を明かす

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. (Source: Wikipedia)

The End of the Girlfriend