Time travel to the end of the future. Ecological destruction, a thousand fortresses have been erected as the last homeland for human survival. Results letter peak opening was thrown to the outside world. Radiation, poison gas, the body is just a normal person's letter peak and there is no way to survive in the environment. Fortunately, the sign-in option came when he was about to die. Either one, a potion to improve your body so that you can live. It's also a super powerful charger. Do you have to choose? Results at the foot of a companion. The hand clutching at the potion was carelessly twisted. Oh, my God! What if you choose the wrong one? ? It doesn't matter, in this last age, all people dream of the body evolved to adapt to the environment, set off a mecha frenzy!