### Worldbuilding
- Time period: A modern urban setting, with technology on par with the real world, but also hidden underground forces and ancient martial arts traditions.
- Locations: The main setting is Donghai City, with a variety of locations including an international financial center, an underground black-market auction house, and a top private hospital. The mysterious Cloudveil Mountain is a key location that hints at secrets to come.
- Background: Beneath the city’s glittering surface lie multiple factions, including ancient martial arts clans, international mercenary organizations, and secret research institutions. The male protagonist, a reclusive Dark Night King, is drawn back into the turmoil by a special marriage contract and uncovers the mystery behind a genetic modification experiment conducted twenty years ago.
