1. It kinda reminds me of the Netflix show Dream, where the gods die but they don’t really( Morpheus dies but I think his name was Daniel takes over and becomes the dream king) so I think the forefather will die and Yongjin will be the new dragon. And get reborn and reborn for years.
2. The dragon king might skip a generation and be reborn as Yongjin’s son since he has to be reborn from that family line.
Those are my predictions, agree??