Ep. 10: Encontro de Naoya em Onsen Envolve Saki, Nagisa, Rika e Shino Kiryū

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The other girl, Shino Kiryū, tries to talk to Naoya but Saki prevents it. While Naoya, Saki, and Nagisa are out shopping for the hot spring date, they are followed by Rika. Nagisa wonders if she should try to kiss Naoya, but when she sees how much Rika kissing Naoya has stressed Saki out, she decides to support her instead. Rika soon learns about the date. Shino is determined to find out if Naoya is two-timing Saki. The trio head to Hakone where Naoya decides they will do everything they cannot do in their hometown, so he holds both Saki and Nagisa's hands at the same time. Saki suspects they might have sex during the trip. They find Rika is already at their hotel, as is Shino who confirms Naoya is two-timing Saki with Nagisa. However, Nagisa blackmails Rika with her Milika photo into pretending she came with her and not with Naoya. When Naoya learns about Nagisa's self-sacrificing plan, he is unwilling to leave her out of the date, sneaks onto the roof and asks that she join him and Saki, but she refuses. Now inadvertently alone with Rika, she decides to seduce him. (Source: Wikipedia)