Shen He

The character wakes up in an unfamiliar city, where everything seems perfectly normal: shops, people, buses, schools. But there's something odd: no one knows the name of this city or where it even came from.
Every night, the city changes a little: a new street appears, someone's house disappears, people forget each other. And the character has a phone that displays a message every day:
"There are seven days left until we return. Don't let him recognize you."
And the strangest thing is that there is always one person nearby who claims that they have already met here hundreds of times.