Cocolors (2017)

Overview : Aki isn’t a brave little boy, but he’s dedicated nonetheless to safeguarding his sickly, mute friend Fuyu. They and their little gang live deep underground, in the concrete warrens to which survivors have fled following the eruption of Mt. Fuji. The community is in decline, however, as illness and despair take their toll. Fuyu dreams of the outside world, which he is too frail to ever reach. But what colour is the sky out there?

Release Date : November 15, 2017

Runtime : 46m

Genre : Animation, Science Fiction  

Companies : Kamikaze Douga

Countries : Japan

Keywords : underground world, japan, nuclear war, post-apocalyptic future, volcano, volcanic eruption, snowing, volcanic ash, underground complex, robot suits, underground city, mount fuji, japan, underground civilization, dark ash, festival of colors