Responses
I have a guess, that he's one of the reasons why the King became a tryrant.
He really do looks like a villain in disguise. Remember that chapter where the king scared the dancer? That Soongjae smirk after the king took the girl to his room.
We have the same suspicion ╮(￣▽￣)╭
When soongjae said his grandfather died 3 years ago? why does he look so proud that his grandfather died? （￣へ￣）