I seriously have no clue what that aristo-crap's deal is. He says he's trying to get the kingdom stabilized, which would involve getting the king's attention to take action, which requires his daughter, the princess, to convince him. That princess is obviously doing things behind the scenes both to not attract her father's ire for her job, the hero's, potential to usurp him, and has her own plans that involves the MC.
Either the aristo-crap has so little faith in the princess that he tries to take matters into his own hands, or he's totally ignorant and stupid having no idea how his actions could actually make things worse for her than they already are. Moreover, trying to besmirch MC's reputation in an effort to separate him from the princess, he has no idea that he's making a beeline to her chopping block. I'm hoping to see he'll take a long, hard fall at the end of this.