At the Edge of the Galaxy, Remember to Knock

In 2555, planetary pollution cleanup worker Qi Zhou was just three minutes away from clocking out on time and hurrying home to watch his daughter do her independent training.

Then, beneath the last bag of trash, he found a door.

Sixty-seven thousand light-years. Six years. There was only one thing he wanted to do: go home.

But first, he had to answer a harder question: What exactly deserved to be cleaned up?

A city where it rained memories, a country where only children stayed awake, a station where someone died once a day, garbage that threw itself away... He repaired things all along the way and was wanted everywhere he went. In the end, what confirmed that he had truly made it home was a local notice complaining that the garbage truck was seventeen minutes late.