Yuuji goes to America to follow the same path as Asako, and through his rigorous military life meets and forms a deep bond with war buddies who go through the same joys and sorrows.

A formless supporter, "Thanatos," suddenly supports Amane and the others. "Her" objective is also to liberate and rescue Yuuji Kazami. Thanatos and the Mihama girls' interests align and begin preparing to execute their mission. The girls are perplexed by Thanatos's seemingly cryptic instructions that unfold via cell phone, but they bring the girls better results than they ever expected in bringing their goal to fruition.