Parent-teacher conferences are held at Ichinose Academy. Nariyuki intends to decide his major based on what would be best for his family, but his mother, Hanae, advises him to do what he wants to do. Meanwhile, the math professor Rizu met at that open campus appears and again tries to persuade Rizu to pursue mathematics. His name is Reiji Furuhashi and he’s Fumino’s father.
　During their conference, Fumino and Reiji have a major argument. In the course of events, Fumino leaves home and moves in with the Yuiga family. With Hanae’s permission, Nariyuki and Fumino eat and sleep together, and somewhere along the line start to feel like a newlywed couple?!