Takeo and Rinko hold a surprise birthday outing for Makoto, with Takeo treating both of them. While at Takeo's workplace, the group meet Hayato Oda, one of Ai's aquaintances from university who came to see the boy she turned him down for, much to the dismay, who is staying over for the weekend. Later, after Takeo becomes concerned over Rinko turning down a trip to an amusement park, Ai and Hayato get Rinko to reveal she is cautious about a rumored jinx that causes couples who go there to break up. Since the jinx seems to only apply to dates, Hayato suggests that they make it a group outing with everyone. That night, Hayato spends the night at Takeo's place, where he explains how he fell in love with Ai. The next morning, Hayato reveals to Ai his intentions to separate Takeo from Rinko so she can confess her feelings to him.