Yui Sato (Airi Matsui), now knows the past of Kyoichi Amagi (Mokomichi Hayami), and could not endure the weight so she talked with Kojiro Aida (Yuta Hiraoka). Yui asks Aida's dog, Snoop, to play in a dog cafe and the two talk about what's weighing in her chest. There, Aida is informed of an emergency. Aida rushes to the hospital, and Yui takes Snoop with her. That night, Aida appears in Yui's apartment to pick up Snoop. Aida suddenly “falls” on Yui…! ? Meanwhile, in front of Sae Mishima (Michiko Tanaka) who keeps intensely hitting on Amagi, her ex boyfriend, Yuuki (Masasa Kasamatsu) appears. Sae treats her former boyfriend coldly and that action causes a terrible disaster! !