The end of the world, fast time travel, unlimited flow.
Strong. The guy who complains about letting himself go but is actually very reliable in attack/is too lazy to pay attention to you but he also seems to be very trustworthy.
In a future world where human society has completely collapsed, only a fortress composed of survivors can survive.
Of course, there are also accidents, such as the Xi He explorer team that was accidentally captured by a certain fortress military division hidden deep in the snowy mountains.
Since the world is in danger, someone needs to ferry it across.
I'm responsible for lighting the light, and you have to push the boat forward.