A certain day, a certain place, the 20th floor of an apartment building. Having finished unpacking within a single day of stepping into their new home, Guest left the entrance late at night dragging two large trash bags. The memories they said goodbye to were certainly heavy, making them difficult even to lift. The sight of a single person dragging large bags with both hands was quite comical from an outsider's perspective. Guest headed toward the garbage disposal area, thinking that if anyone came out into the hallway now, they'd surely be mistaken for a ghost or something.

After walking about a third of the way down the long corridor, light footsteps echoed from behind.

Surprised, Guest turned around to see a man running toward them from a distance. The man stopped in front of Guest and smiled, saying hello.