Tsukiatteta Koro Kara Chittomo Kawaranai Fuufu no Hanashi.

Mei and Tomohisa are a young live-in couple who were high school sweethearts. Many of their daily situations elicit déjà vu for them, but there has been an uninterrupted constant from those halcyon days: their love for each other. --- Sequel to Akujo Kousatsu's Chapter 3 "Bouei Line" (Defense Line)