Mr. Kurosaki's Pure Love Never Stops

It feels as though someone is peeking through the countless windows. A young couple lives in an apartment building under construction, and a female diorama artist moves in. She is the husband's former lover, and he is drawn to her room, rekindling their love. The wife, waiting at home, senses that the couple's gazes are gradually drifting apart, but continues to pretend not to notice. The building under construction emits construction noises and subtle vibrations from outside, shaking the relationships of the residents. The elderly man who manages the building watches all of this from the surveillance monitor in his office. One day, as if on cue, the entire building experiences a power outage. The wife sees the only light spilling out from the window of the manager's office in the pitch-black building. She steps into the manager's office and confronts reality. The city, people, and stars appear small in the distance. What is happening over there?