Sinopsis
In near-future Earth, a new Ice Age has taken hold—and after a world war, the winners cling to what few non-frozen paradises remain on the surface, while the losers dwell under the sea and begin to evolve into something else. But once these undersea survivors obtain a new, unheard-of flying craft, will they manage to rule over the planet once more?
(Source: Kodansha)
Latar belakang
Protocol Ryugu has been published digitally as an English simulpub by Kodansha through K Manga.
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