Short Summary:
So the story begins with the protagonist peacefully observing the beauty of nature that surrounds him, taking a moment to rest beneath the tree. However, black cloud approached his location from the horizon unvailling the massive buildings pulled by the countless creatures which upon its construction caused destruction of the surrounding nature.
And then the scene transits showing protagonist gradually adapting to the dystopian society while also developing a romantic feeling towards one of his neighbor. But in unexpected turn of event, soon after his plant died, massive jellyfish like thing started to kidnap the inhabitants ending the story with the protagonist and his crush getting trapped inside the same jellyfish.
Meaning & Reaction:
M: Probably this animation serves as the reminder of how urbanization and disregard to the surrounding nature at its process would lead to destruction of the nature and it could backfire to the society. Jellyfish and unknown disease spreading among the inhabitants symbolizes the nature`s retaliation / backfire against the society, and for the ending part I interpreted that the inhabitants that cared about the nature even slightly were spared inside the Jellyfish while the others who completely ignored it succumbed to death by the unknown disease.
R: This cold and dark atmosphere of the dystopian society that protagonist resided reminded me of the Tokyo, especially during the rain.