@cryum I disagree with you on Leon's need to show off. The end result might look the same, but he actually has a need to make others fall, not raise himself up. He's genuine with his wish to stay away from the nobles' troubles, which is why he doesn't even dream of marrying Angie or Livia, the daughter of a duke and the future saint. After all, marrying one of them (or both of them) would be a big way of showing off. However, at the same time he hates that unfair world and enjoys seeing things go wrong for those who should be reaping the rewards of that unfairness simply because of their family background. Pretty much the whole school dislikes him already, which is natural for someone whose main concern is to make others suffer, not one who wants to be admired.
If he has done some good deeds, it's to save Angie's reputation, not his own.
@Adokun Angie or Livia are in love with him, more or less, or at least aren't opposed to being in love with him. We learned that from their talks back at the hotspring. However, they don't consider themselves worthy.