>>3705661Child Emperor only gets some good screen time after Season 1. At which point Season 2 isn't worth watching, and it still takes until reaching the Monster Association arc for him to get a good bit of focus, which was good. He's a pretty good character.
Ultimately just depends on if you want to sit through non-shota content to get to him, and by the time you do get to him the story has been changed from parody to full-on regular shonen.