By the way did you mean when Harold gets that meltdown before entering Paradise or when Harold gets mad generally when finding the wrong sword?
The general parts where Harold gets mad. The actual set up for those I found great. It was pretty funny to keep finding out how overloaded a hammer sign can be XD It was really just the way he reacted. I can't quite put my finger on why it didn't work for me, hence why I didn't elaborate much. It might just be a taste thing, you know? In which case you're good to go =)
The meltdown before entering Paradise is great! It really gave a nice turn to the story's usual light-hearted tone. And I personally felt that it mimicked what it feels like to apologize in real life: how awkward it can be, and how simple things can become rather tedious as a result.
In my opinion the repetitive use of angry responses as a result of finding the wrong sword got into a low effort repetitive habit I didn't think too much about. I def think it appeals to a sense of humor that thinks inappropriate anger is funny. Through multiple playthoughs of my own game I think it does feel overused and am considering varying his responses to more than just anger
That's a good attitude to have, and experimentation will help you to grow too. So it looks like a win-win no matter what XD Just a suggestion, you could try something like top-left and bottom-left types of reaction in this image of Magilou. And the bottom-right could also be a good way to mix up Harold's initial attitude when reaching a new smith.