How laugheable. Now that they know the fake is fake, they can still treat him alright. The father is also shitty for still treating that fake with open arms, knowing the truth about how his wife died. Hopefully the downfall will sooner swallow them. And don't forget the royal family is also shitty; they're only alive because they're royalty.
This is the problem in ancient time...The Emperor will punished those who did crime but can't accept that his mother did the same.