Responses
I think the "sword and shield that protect the king" doesn't mean the tools but people -with Hak in the lead-
Hak is like sword and shield in himself
No, he IS the dark dragon/raijuu ;P
Kashi and Il must have seen the future about Soowon though he is still pretty harsh to the kid. But I am also torn because his brother's family literally messed up his wife and his daughter in the future. I can't still forget what Yuhon did to the priests and Kashi's mom so him getting killed in the future is his karma...
And Kashi saying 'protect Yona' to Hak, he must have also seen his future. Could it be Hak is the shield something about the prophecy ??