By the decree of the Heaven-and-Earth Stone, the Dragon and Phoenix clans are to unite in marriage. The two Divine Lords independently choose to flee their weddings and end up in a modern city. To keep a low profile, they each join the Night Watch, whose sole duty is to suppress supernatural phenomena during the long night. These supreme immortals disguise themselves as ordinary team members while secretly revealing their divine powers. As they spend their days and nights together, their feelings deepen. United as dragon and phoenix, they join hands to guard the human world through every long night.
(I love stories about giving birth, so maybe there'll be some later on (◦˙▽˙◦))