Side Note, don't take this タイトル too seriously, it was clickbait(I don't think my opinion is fact)
Major Spoilers Ahead
Alright, first things first, the characters, they are the worst characters I've ever seen. Not because they are unlikable, I mean, they haven't done anything to warrant such hate for their actions(expect Saturo). The reason why they are they are the worst is that for a lack of a better word, they are one trait characters(with the exception of Saturo once again). Yeah, あなた heard that, right, they have A single trait! Don't believe, okay let's look at our mains then.