Does the winner of the election become king immediately?


Does the winner of the election become king immediately? Or do they merely
become heir apparent, to succeed Souichirou when he retires/dies?

I ask, because in episode 12,

> we learn that Shuu has won the election. Was the ceremony at the end of
> episode 12 a proper coronation for him? Or was it just a "congratulations,
> you're the heir, now wait a few decades" type of thing? From the way
> Souichirou spoke to him, I couldn't quite tell which it was.

