As we were left at the point, where Takane-san had offered Setoka a ride, Haruka-kun is feeling some sort of trouble and is worried about Setoka. So, for that reason he goes off to chase them w/ a bike...Meanwhile, Takane-san notices Haruka-kun and starts to speed up. After being able to finally get away from him,Takane-san gives setoka a present and takes her to a restaurant. There a woman,who proclaims that she's a much more worthy woman to stand by Takane-san's side, gets worked up,by the fact that Takane-san claims that Setoka is his fiance and kisses her. Before she leaves she tries to spill her drink over Setoka,but then Takane-san protects her. After she leaves, those two meet Chiaki-kun and ,again, Takane-san, introduces himself as Setoka's date. When Setoka arrives home, Haruka-kun, seems to have waited her,for quite some time. He then mocks her about her date with Takane-san,but also seems to be a little jealous. Then, Haruka-kun, out of frustration, was about to kiss Setoka, saying that as long as it's just a kiss, it can be anyone. But, then he stopped and said that she's her sister so it's impossible. At that time we can sense that Haruka-kun got self-conscious and so did Setoka.But, we can also take into account, Setoka's feeling,cause as he said those word,Steoka seemed a little bit disappointed. The episode finishes with Takane-san and Haruka-kun, meeting up, and having a conversation about Haruka-kun's feelings etc.
Overall, this episode is quite a thrilling one, I would say,since setoka has now been targeted by both Takane-san and Haruka-san