At this point, the only way the writing would make any sense is if the princess is actually a demon in disguise and is trying to get the Kingdom nuked.
"The object of my veneration must not be sullied by associating with us of low talent.". - Evil Yuu
Probably going to be a thing where Yuu tells Evil Yuu that he sees the geniuses he is with as people who make mistakes and not perfect objects of worship.