The group is enjoying their trip to Hawaiianz. Kazuya ends up riding a water slide with Chizuru, and his heart is racing as he finds himself in close proximity to her. As they finish the ride and get out of the pool, Chizuru notices that the top of her swimsuit has come off. "...It got swept away. My swimsuit...top..." Seeing Chizuru blushing, Kazuya's heart races, but he begins to search the area.

The group enjoys the open-air bath. Chizuru, Ruka, and Kazu are having a girls' talk in the women's bath. Meanwhile, in the men's bath, Kazuya and his father, Kazuo, are talking. It seems Kazuo had previously witnessed Kazuya giving Chizuru money... Afterwards, Ruka comes out of the bath and reflects on what Mami had said earlier. The possibility of becoming Kazuya's real girlfriend... Ruka stops Kazu on her way back to the room, and they decide to talk alone. "For example, if Chizuru is lying..."