Oh? So there is plenty of warning sign that Sho is not interested in her old self. Not knowing she is bullied and kissing/flirting with other girl. Mogami just kept quiet and Sho know this probably. That why it escalated to "that" at the beginning of the manga where Sho feel entitled to do...
Joseph tried to increase Simon enemy count but did not think he would also anger all his own countrymen since they too are helped by Simon. Smh what an idiot. He making an enemy of the prince and princess just to satisfy his own personal grudge.