Varmints

The story takes place in a land where there are plentiful of greenery and countless of living organisms exist. The appearance of the main character is presumably male and has rabbit-like ears. These creatures of the green land were living peacefully until the darkness appeared suddenly in front of them. The green land got contaminated by the dark and everything except for one tree branch that main character saves died. He then starts to investigate the dark and finds out it was a city with full of air pollution. He moves into the city with the tree branch and starts growing it. One night, the pollen of the branch gets blown away by the wind and scatters to the city, which later leaves a huge white and soft object onto many buildings. As the time goes on, the pollution in the air gets even worse, which starts to sicken people of the city and some of them faced death. The main character gives a part of the tree branch to a girl he meets, but then his branch started to die off. Many more people started to die due to pollution and the white object on the buildings began to become larger. That white object transforms itself to become a jellyfish-like organism. Then it started to suck all the living species into its body. As they got inside of the creature, they see a land full of greenery which resembles of what an earth should look like and they became free from the pollution. This could happen to us in the future if humans continue to ignore the environmental issues and pollutes the earth.