Male protagonist: former astronomy researcher, severe insomniac, hidden hand-painting enthusiast, self-isolated due to mistake, obsessed with mechanical watches
- The heroine: the owner of an independent bookstore, a person with special powers who can see the "residual emotions" of objects, habitually saves old bus tickets, and is cheerful on the surface but afraid of establishing close relationships. In the modern city of 2024, the protagonist's memories of five years ago are interspersed.
Urban fantasy + two-way redemption; prosperous but alienated first-tier cities, key scenes are concentrated in old bookstores in old cities, late-night office buildings, and abandoned observatories on the outskirts of the city
