Writing prompt pack

In a coastal megacity protected by a living seawall, residents pay rent in memories donated to the municipal archive. When a flood engineer discovers the wall is growing toward the poorest districts instead of the ocean, she must decide whether the city itself has become predatory.
Twist constraint: The seawall is functioning exactly as designed, and no villain altered its programming.

Every building in the capital shifts location overnight to optimize traffic, sunlight, and energy use. A bicycle courier wakes to find that one apartment has remained in the same place for three days—and its missing occupant has left messages addressed to him.
Twist constraint: The courier cannot enter the apartment or contact the occupant directly.

In a city where predictive policing has been replaced by predictive social care, citizens receive counselors before they commit crimes. A counselor is assigned to a beloved kindergarten teacher whose forecast indicates an act of mass sabotage within forty-eight hours.
Twist constraint: The prediction is accurate, but the teacher’s planned act is neither violent nor malicious.

Rooftop farms feed an inland metropolis after global supply chains collapse, and pollination is handled by corporate microdrones. When the drones begin spelling names in the air above certain homes, an elderly beekeeper recognizes a pattern connected to people who have not yet disappeared.
Twist constraint: The drones are not sentient, hacked, or malfunctioning.

Citizens in a heat-stricken city can earn “shade minutes,” allowing them temporary access to climate-controlled public corridors. A teenage street musician inherits a lifetime supply from a stranger and becomes the target of people convinced the credits conceal a political secret.
Twist constraint: The inheritance is genuine and contains no hidden message, conspiracy, or technological exploit.

A vertical city has outlawed ground-level living after toxic soil