Global Oxygen Poisoning: Only I Can Breathe Freely

Global oxygen poisoning! A mysterious meteorite hits the Amazon rainforest, causing plants to mutate and grow wildly, rapidly spreading around the world! Oxygen levels skyrocket! The city has been reduced to a forest, giant beasts are roaring in the ruins, and human civilization is facing the countdown to destruction in the pain of suffocation... When the unemployed migrant worker [An Xin] woke up from a coma, he was shocked to find—— The whole world is struggling to breathe, but he is the only one who can breathe freely!