
Overview:
Many years ago, after the end of a bloody world war, mankind took shelter in six city-states that were peaceful and perfect... at least on the surface. However, Shion—an elite resident of the city-state No. 6—gained a new perspective on the world he lives in, thanks to a chance encounter with a mysterious boy, Nezumi. Nezumi turned out to be just one of many who lived in the desolate wasteland beyond the walls of the supposed utopia. But despite knowing that the other boy was a fugitive, Shion decided to take him in for the night and protect him, which resulted in drastic consequences: because of his actions, Shion and his mother lost their status as elites and were relocated elsewhere, and the darker side of the city began to make itself known.
Now, a long time after their life-altering first meeting, Shion and Nezumi are finally brought together once again—the former elite and the boy on the run are about to embark on an adventure that will, in time, reveal the shattering secrets of No. 6.
[Written by MAL Rewrite]
Characters and Voice Actors

Nezumi
MainHosoya, Yoshimasa
Japanese

Shion
Main-
Japanese

Ann
SupportingTakagaki, Ayahi
Japanese

Betty
SupportingFujimura, Chika
Japanese

Inukashi
Supporting-
Japanese

Karan
SupportingNakajima, Megumi
Japanese

Karan
SupportingSakuma, Rei
Japanese

Lili
SupportingMorohoshi, Sumire
Japanese

Old Man
SupportingArimoto, Kinryuu
Japanese

Rico
SupportingNishigaki, Yuka
Japanese

Rikiga
SupportingTerasoma, Masaki
Japanese

Roy
SupportingFurushima, Kiyotaka
Japanese

Safu
Supporting-
Japanese

Safu's Grandmother
Supporting-
Japanese

Yamase
SupportingHirakawa, Daisuke
Japanese

Youming
SupportingMiki, Shinichiro
Japanese
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