Escape from the 21st Century

If a sneeze lets your soul attach to your body at 15 years old, what will happen in your body after 20 years? What if it happened to save the world? Three 35-year-old boys with the heart of a 15-year-old middle school student went on a rampage in 2019 and staged an absurd, interesting, and moving adventure story.
(Source: Chinese = Douban || Translation = MDL)