So I have a theory. I think Ms. Thara is the evil mastermind behind all of this. I think she is the one that killed tong's parents and is waiting to kill him on his 21st birthday. Because she's dying and need the golden blood and for reason can only drink it on his 21st birthday. ( Don't really know why Nakan is helping them and taking Tong) But let's see how this all unfolds