When the new school term starts, Amane and Mahiru are put in the same class. At home, Amane makes meal requests and gives Mahiru gifts. The two neighbors' relationship is almost as intimate as if they were married. At school, however, Amane treats Mahiru like a stranger. When Mahiru notices how differently Amane treats Itsuki and Chitose, she gets the uncomfortable feeling that she is being left out. Mahiru tries to think of a way to gradually get closer to Amane.