The emperor harbored no remorse for his monstrous actions. He believed that with the crown prince's demise, he could secure his own survival.
Even if the duke harbored aspirations to seize the throne, he knew the path would be gradual. They were not formidable enough at present, with a single General Manor causing them considerable trouble.
Taking calculated steps, they aimed to cripple the General Manor and elevate the crown prince to the throne with their support, positioning themselves as regents. This strategy would provide an opportunity to eliminate the General Manor.
Once rid of the General Manor, dealing with other civil and military officials would become much simpler, or so the emperor believed in his perceived cleverness.
However, he never anticipated being exposed after giving the crown prince a candy.
The revelation occurred somewhat coincidentally.