The action takes place in the city gradually die Sugomori built on the recovered lands,where the protagonist lives Katsuhiro Agatha. One classmate tells him that he was chosen to participate in designed to bring peace in the world "Communication " pilot program. Program participants are combined into groups of eight people, and if someone from that eight wounded, his wound and transferred to others. Members of such groups are called " Related ". Himself the protagonist is not sensitive to pain and are not interested in the outside world. The one with it " team" are: more unemotional than Katsuhiro mysterious Noriko Sonozaki, Hajime Tang - the guy who makes the first, then thinks narcissist handsome Tsuguhito Utah, asocial and very quiet Honoka Maki, noisy,but a good friend Katsuhiro Chidori Takasiro (and maybe her feelings for the guy - not just friendship?) fantazёrka Nico Niyama and mysterious handsome Yoshiharu Hisomu.