I think carsein is in on it. Or at the very least, he's aware of what that brat was up to....

I think carsein is in on it. Or at the very least, he's aware of what that brat was up to. He stands to gain the most whether or not maythan gets banished after all. Banished, he can visit maythan incognito while the crown prince most likely can't unless he wants to step down. If maythan agreed to flee he'd basically be a fugitive, carsein could hide him away where only he would know. And considering what happened in prev chapters w/ all the noncon scenes, he seems perfectly capable and willing to resort to either