I find that most of the characters were at their lowest points between late season 2, season 3, and early season 4 with most of them 'redeeming' themselves along the way and reaching their peak in season 4.
Which makes perfect sense for a show where one of the things it does very well is great character development and we're heading toward the final season now. A lot of the conflict and drama during the 'middle' of the story (seasons 2-4) comes from the characters being at their lowest points.
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no misuzu you ate the princess