Ep. 3: Kazuya y Chizuru visitan la playa de la península de Izu mientras Mami se siente celosa.

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When Kazuya asks Mami about her new boyfriend, she claims that she lied because he brought Chizuru with him. She then claims that her brother is at her place, so they cannot go there. However, when Mami insults Chizuru, Kazuya defends Chizuru before he runs off. When he arrives at his apartment, Kazyua apologizes to Chizuru for what happened earlier. She tells him that it is alright and if he needs her, she will be there for him. Sometime later, Kazuya and his friends head to the beach in the Izu Peninsula. While she is alone, Mami is shown to be very jealous of Kazuya and Chizuru's relationship. Later, Mami attempts to bring up all the good times she and Kazuya had when they were dating, when Chizuru shows up. During a shopping trip, Kazuya and Chizuru get into an argument which draws Mami's attention. Chizuru quickly changes and pretends she and Kazuya are on a date, much to Mami's chagrin. Chizuru attempts to leave, but she is forced to stay which causes Kazuya to brag to his friends about how they met. When he goes swimming, Mami kisses him.