The birthday party for Kyoichi Amagi (Makomichi Hayami) is held on a large scale. Yui Sato (Airi Matsui) stubbornly refuses to attend, but President Secretary Ao Natori (Jinri Irie) says that if she makes a scene at the party, he might forget about her so she accepted reluctantly. After arriving at the venue, Yui is overwhelmed by the large number of invited guests and the atmosphere of the guests among them is Amagi's father and chairman (Hiroyuki Watanabe). Amagi introduces Yui to his father, saying, "she is an important woman". Yui tightens her hand around Amagi's neck, splashes water on his face, and crushes Amagi's party enough to leave the venue. But there was a problem with her. that is…. (Source: Asahi.co.jp)