It came down suddenly, didn't it - S2.E6

Unable to erase Kou from her heart, Futaba heads to Toma to bid farewell. However, Kou, without knowing about Futaba's decision, stops himself from reaching out to her. Futaba and Kou continue to pass by each other... And then comes the Christmas night. Amidst the intertwining of their feelings, Futaba visits the place filled with memories of Kou. Over and over again, it felt like it would start but never did, between Futaba and Kou. Near yet far, will their youth, just one millimeter away, truly reach its conclusion?