Basically his brilliant master plan was to divorce Navier for a while to appease Rashta and then later remarry her cuz even he knows Rashta sucks as an empress.
Have her raise trashta's baby as her own since "she can't have any". But really, the kid's not even his and he's the infertile one since our Queen has a kid later on haha *chef's kiss*
....
Basically his brilliant master plan was to divorce Navier for a while to appease Rashta and then later remarry her cuz even he knows Rashta sucks as an empress.